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<!--
Copyright 2020 The Chromium Authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<!--
This file is used to generate a comprehensive list of Android histograms
along with a detailed description for each histogram.
For best practices on writing histogram descriptions, see
https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histograms/README.md
Please send CLs to chromium-metrics-reviews@google.com rather than to specific
individuals. These CLs will be automatically reassigned to a reviewer within
about 5 minutes. This approach helps the metrics team to load-balance incoming
reviews. Googlers can read more about this at go/gwsq-gerrit.
-->
<histogram-configuration>
<histograms>
<variants name="ActivityType">
<variant name=".ChromeTabbedActivity" summary="ChromeTabbedActivity"/>
<variant name=".CustomTabActivity" summary="CustomTabActivity"/>
<variant name=".FirstRunActivity" summary="FirstRunActivity"/>
</variants>
<variants name="AndroidDownloadTypes">
<variant name=".Audio" summary=""/>
<variant name=".Document" summary=""/>
<variant name=".Image" summary=""/>
<variant name=".OfflinePage" summary=""/>
<variant name=".Other" summary=""/>
<variant name=".PrefetchedOfflinePage" summary=""/>
<variant name=".Total" summary=""/>
<variant name=".Video" summary=""/>
</variants>
<variants name="AutofillAssistantIntents">
<variant name="" summary="aggregated across all intents"/>
<variant name=".BuyMovieTicket"/>
<variant name=".FlightsCheckin"/>
<variant name=".FoodOrdering"/>
<variant name=".FoodOrderingDelivery"/>
<variant name=".FoodOrderingPickup"/>
<variant name=".NotSet"/>
<variant name=".PasswordChange"/>
<variant name=".RentCar"/>
<variant name=".Shopping"/>
<variant name=".ShoppingAssistedCheckout"/>
<variant name=".Teleport"/>
<variant name=".UnknownIntent"/>
</variants>
<variants name="JankMetricsScenarios">
<variant name="">
<obsolete>
Renamed to .Total
</obsolete>
</variant>
<variant name=".NewTabPage" summary="while NTP is open"/>
<variant name=".OmniboxFocus" summary="while Omnibox is focused"/>
<variant name=".OpenLinkInNewTab"
summary="while opening a link in a new tab using the long press menu"/>
<variant name=".StartSurfaceHomepage"
summary="while the homepage on start surface is visible"/>
<variant name=".StartSurfaceTabSwitcher"
summary="while the tab switcher on start surface is visible"/>
<variant name=".Startup" summary="while Chrome is starting"/>
<variant name=".TabSwitcher" summary="while Tab switcher is open"/>
<variant name=".Total"
summary="while ChromeTabbedActivity is resumed. However, there's an
unusual implementation detail: Individual frame durations are
measured in Java, and passed over to C++ for recording once
every 30 seconds. Thus, frames that occur near program
termination might be dropped from the data"/>
</variants>
<variants name="MessageIdentifiers">
<variant name=".AddToHomescreenIPH"/>
<variant name=".AdsBlocked"/>
<variant name=".ChromeSurvey"/>
<variant name=".DownloadProgress"/>
<variant name=".GeneratedPasswordSaved"/>
<variant name=".MerchantTrust"/>
<variant name=".NearOomReduction"/>
<variant name=".NotificationBlocked"/>
<variant name=".PermissionUpdate"/>
<variant name=".PopupBlocked"/>
<variant name=".ReaderMode"/>
<variant name=".SafetyTip"/>
<variant name=".SaveAddressProfile"/>
<variant name=".SaveCard"/>
<variant name=".SavePassword"/>
<variant name=".SendTabToSelf"/>
<variant name=".SharedHighlighting"/>
<variant name=".SyncError"/>
<variant name=".UpdatePassword"/>
</variants>
<variants name="ProviderPermissionType">
<variant name=".READ_HISTORY_BOOKMARKS" summary=""/>
<variant name=".WRITE_HISTORY_BOOKMARKS" summary=""/>
</variants>
<variants name="ThumbnailProvider_ClientType">
<variant name=".DownloadHome" summary="Download home"/>
<variant name=".NTPSnippets" summary="NTP snippets"/>
</variants>
<histogram name="Android.AdaptiveToolbarButton.Clicked"
enum="AdaptiveToolbarButtonVariant" expires_after="2022-02-15">
<owner>bttk@chromium.org</owner>
<owner>chrome-segmentation-platform@google.com</owner>
<summary>
Reports the variant of the optional toolbar button that was clicked. Reports
only when the feature AdaptiveButtonInTopToolbar is active.
</summary>
</histogram>
<histogram name="Android.AdaptiveToolbarButton.SessionVariant"
enum="AdaptiveToolbarButtonVariant" expires_after="2022-02-15">
<owner>bttk@chromium.org</owner>
<owner>chrome-segmentation-platform@google.com</owner>
<summary>
Reports the variant of the optional toolbar button used during the session.
Reports only when the feature AdaptiveButtonInTopToolbar is active, the
button is placed in the toolbar, and is clickable.
</summary>
</histogram>
<histogram name="Android.AdaptiveToolbarButton.Settings.Changed"
enum="AdaptiveToolbarRadioButtonState" expires_after="2022-02-01">
<owner>shaktisahu@chromium.org</owner>
<owner>chrome-segmentation-platform@google.com</owner>
<summary>
Records the newly selected radio button option for the adaptive toolbar
button on the toolbar shortcut settings page. Recorded only when the
selected radio button state is changed.
</summary>
</histogram>
<histogram name="Android.AdaptiveToolbarButton.Settings.Startup"
enum="AdaptiveToolbarRadioButtonState" expires_after="2022-02-01">
<owner>shaktisahu@chromium.org</owner>
<owner>chrome-segmentation-platform@google.com</owner>
<summary>
Records the currently selected radio button option for the adaptive toolbar
button on the toolbar shortcut settings page. Recorded on startup, only if
AdaptiveButtonInTopToolbarCustomization feature is enabled.
</summary>
</histogram>
<histogram name="Android.AdaptiveToolbarButton.SettingsToggle.Changed"
enum="BooleanEnabled" expires_after="2022-02-01">
<owner>shaktisahu@chromium.org</owner>
<owner>chrome-segmentation-platform@google.com</owner>
<summary>
Records whether the toolbar settings toggle button is on or off on the
toolbar shortcut settings page after the user manually changes it. Recorded
after the user explicitly taps on the toggle button.
</summary>
</histogram>
<histogram name="Android.AdaptiveToolbarButton.SettingsToggle.Startup"
enum="BooleanEnabled" expires_after="2022-02-01">
<owner>shaktisahu@chromium.org</owner>
<owner>chrome-segmentation-platform@google.com</owner>
<summary>
Records whether the toolbar settings toggle button is on or off on the
toolbar shortcut settings page. Recorded on startup.
</summary>
</histogram>
<histogram name="Android.AppLaunch.BlockDrawForInitialTabAccuracy"
enum="AppLaunchBlockDrawForInitialTabAccuracy" expires_after="2021-12-15">
<owner>sinansahin@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>skym@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the accuracy of the logic used to decide whether to block the view
draw of the first tab, expressed as an enum. Recorded when the active tab is
restored or an initial tab is created in ChromeTabbedActivity.
</summary>
</histogram>
<histogram name="Android.AppLaunch.DurationDrawWasBlocked" units="ms"
expires_after="2021-12-15">
<owner>sinansahin@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>skym@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records how long the initial tab's draw was blocked, if it was. Recorded
when the active tab is restored or an initial tab is created in
ChromeTabbedActivity.
</summary>
</histogram>
<histogram name="Android.AppNotificationStatus" enum="NotificationAppStatus"
expires_after="never">
<!-- expires-never: Indicates whether Chrome has notification permission. -->
<owner>dtrainor@chromium.org</owner>
<owner>peter@chromium.org</owner>
<summary>
Records whether notifications are enabled for Chrome, as the Android app,
every time metrics are logged.
</summary>
</histogram>
<histogram name="Android.ArmCpuPart" enum="ArmCpuPart"
expires_after="2022-01-01">
<owner>rsesek@chromium.org</owner>
<owner>clank-security@google.com</owner>
<summary>
Reports information about the ARM CPU of a device. This composes the 8-bit
ARM implementer identifier and the 12-bit part number into a single 20-bit
CPU identifier, ranging from [0x00000,0xFFFFF]. Depending on the CPU
package, processor configuration, and/or kernel version, this may only
report information about the processor on which the metric was collected.
This can happen on heterogeneous-processor SoCs. The metric is logged once
every startup.
</summary>
</histogram>
<histogram name="Android.AutofillAssistant.DropOutReason{Intent}"
enum="AutofillAssistantDropOutReason" expires_after="2022-06-08">
<owner>selakovic@google.com</owner>
<owner>mcarlen@chromium.org</owner>
<summary>
Reports the drop out reason of an Autofill Assistant script during the
{Intent} flow. It is recorded when Autofill Assistant is shut down or
terminated. The AA_START value is used as a baseline and counts the number
of attempted starts of Autofill Assistant flows. The sum of all drop out
reasons should be the same as the number of attempted starts (i.e.
AA_START).
</summary>
<token key="Intent" variants="AutofillAssistantIntents"/>
</histogram>
<histogram name="Android.AutofillAssistant.FeatureModuleInstallation"
enum="AutofillAssistantFeatureModuleInstallation"
expires_after="2022-06-08">
<owner>mcarlen@chromium.org</owner>
<owner>autofill_assistant+watch@google.com</owner>
<summary>
Reports the installation status of the DFM, e.g. installation deferred,
foreground installation succeeded etc. The metric cannot currently
distinguish whether the deferred installation succeeded or not.
</summary>
</histogram>
<histogram name="Android.AutofillAssistant.OnboardingFetcher.ResultStatus"
enum="AutofillAssistantOnboardingFetcherResultStatus"
expires_after="2022-06-08">
<owner>sandromaggi@google.com</owner>
<owner>mcarlen@google.com</owner>
<summary>
Reports the result status of the AutofillAssistantOnboardingFetcher. This
includes general failures to get any data as well as failures to analyse or
extract data that was received. This is recorded every time an onboarding
definition is loaded for a user.
</summary>
</histogram>
<histogram name="Android.AutofillAssistant.OnBoarding{Intent}"
enum="AutofillAssistantOnBoarding" expires_after="2022-06-08">
<owner>lsuder@chromium.org</owner>
<owner>mcarlen@chromium.org</owner>
<summary>
Reports the basic user interactions that can happen in regard to onboarding
during the {Intent} flow. It is recorded on Autofill Assistant startup and
during the on boarding.
</summary>
<token key="Intent" variants="AutofillAssistantIntents"/>
</histogram>
<histogram name="Android.AutofillAssistant.PaymentRequest.AutofillChanged"
enum="AutofillAssistantPaymentRequestAutofillInfoChanged"
expires_after="2022-06-08">
<owner>arbesser@google.com</owner>
<owner>mcarlen@chromium.org</owner>
<summary>
Reports whether autofill information was changed during an autofill
assistant payment request, or not. This is recorded every time the user sees
the autofill assistant payment request.
</summary>
</histogram>
<histogram name="Android.AutofillAssistant.PaymentRequest.FirstNameOnly"
enum="Boolean" expires_after="2022-06-08">
<owner>arbesser@google.com</owner>
<owner>mcarlen@chromium.org</owner>
<summary>
Reports whether the user selected a profile which does not contain separate
first and last name. This is recorded when the user confirms the payment
request screen in autofill assistant provided that 'name' was one of the
requested fields.
</summary>
</histogram>
<histogram name="Android.AutofillAssistant.PaymentRequest.MandatoryPostalCode"
enum="AutofillAssistantPaymentRequestMandatoryPostalCode"
expires_after="2022-06-08">
<owner>arbesser@google.com</owner>
<owner>mcarlen@chromium.org</owner>
<summary>
Reports on whether a billing postal code was required and whether the user
ultimately succeeded or not. Also reports if the user had to change their
profile or if the default profile already contained a billing postal code.
This histogram is reported either when the user taps the 'continue' button
of the autofill assistant payment request (and thus succeeds) or when
autofill assistant closes during the action (i.e., the user aborted).
</summary>
</histogram>
<histogram name="Android.AutofillAssistant.PaymentRequest.Prefilled"
enum="AutofillAssistantPaymentRequestPrefilled" expires_after="2022-06-08">
<owner>arbesser@google.com</owner>
<owner>mcarlen@chromium.org</owner>
<summary>
Reports whether the autofill assistant payment request was successfully
completed (i.e., the continue button was tapped) or not, and whether the
payment request was initially pre-filled completely or not. This is recorded
every time the user sees the autofill assistant payment request.
</summary>
</histogram>
<histogram name="Android.AutofillAssistant.TextToSpeech.ButtonAction"
enum="AutofillAssistantTextToSpeechButtonAction" expires_after="2022-06-08">
<owner>jainshashank@google.com</owner>
<owner>arbesser@google.com</owner>
<summary>
Reports the resultant action that happens on clicking the autofill assistant
TTS button. This is recorded every time the TTS button is clicked.
</summary>
</histogram>
<histogram name="Android.AutofillAssistant.TextToSpeech.EngineEvent"
enum="AutofillAssistantTextToSpeechEngineEvent" expires_after="2022-06-08">
<owner>jainshashank@google.com</owner>
<owner>arbesser@google.com</owner>
<summary>
Reports the various TTS engine events received by the autofill assistant TTS
controller. This is recorded every time the autofill assistant TTS
controller receives a TTS event.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.ExactTaskCreated"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>fgorski@chromium.org</owner>
<owner>nator@chromium.org</owner>
<owner>knollr@chromium.org</owner>
<summary>
Records that an exact task has been created. Recorded when the task is
scheduled.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.MigrationToProto"
enum="BackgroundTaskId" expires_after="2020-12-01">
<obsolete>
Removed in October 2020.
</obsolete>
<owner>ioanastefan@chromium.org</owner>
<owner>nator@chromium.org</owner>
<owner>knollr@chromium.org</owner>
<summary>
Records the stored tasks migrated to the Protocol Buffer data format. The
metric is recorded when the migration to the new format is being done. The
migration is done at a restart / OS upgrade, if tasks stored in the old
format are found.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskCanceled"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>fgorski@chromium.org</owner>
<owner>nyquist@chromium.org</owner>
<summary>Records that a specific background task has been canceled.</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskCreated.WithExpiration"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>fgorski@chromium.org</owner>
<owner>nator@chromium.org</owner>
<owner>knollr@chromium.org</owner>
<summary>
Records that a specific task has been created with an expiration deadline.
Recorded when the task is scheduled.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskCreated.WithoutExpiration"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>fgorski@chromium.org</owner>
<owner>nator@chromium.org</owner>
<owner>knollr@chromium.org</owner>
<summary>
Records that a specific task has been created without the expiration feature
activated. Recorded when the task is scheduled.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskExpired"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>fgorski@chromium.org</owner>
<owner>nator@chromium.org</owner>
<owner>knollr@chromium.org</owner>
<summary>
Records that a specific background task has expired. Recorded before the
task is to be started.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskLoadedNative"
enum="BackgroundTaskId" expires_after="2022-01-30">
<owner>fgorski@chromium.org</owner>
<owner>nyquist@chromium.org</owner>
<summary>
Records that a task extending a NativeBackgroundTask started loading the
native portion of Chrome (either in Reduced Mode or Full Browser Mode).
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskLoadedNative.FullBrowser"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>mheikal@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<summary>
Records that a specific background task has loaded native in Full Browser
Mode.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskLoadedNative.ReducedMode"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>mheikal@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<summary>
Records that a specific background task has loaded native in Reduced Mode.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskScheduled.Failure"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>fgorski@chromium.org</owner>
<owner>nyquist@chromium.org</owner>
<summary>
Records that a specific background task has failed to be scheduled.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskScheduled.Success"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>fgorski@chromium.org</owner>
<owner>nyquist@chromium.org</owner>
<summary>
Records that a specific background task has been successfully scheduled.
</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskStarted"
enum="BackgroundTaskId" expires_after="2022-01-30">
<owner>fgorski@chromium.org</owner>
<owner>nyquist@chromium.org</owner>
<summary>Records that a specific background task has been started.</summary>
</histogram>
<histogram name="Android.BackgroundTaskScheduler.TaskStopped"
enum="BackgroundTaskId" expires_after="2021-12-01">
<owner>fgorski@chromium.org</owner>
<owner>nyquist@chromium.org</owner>
<summary>
Records that a specific background task has been stopped by Background Task
Scheduler before it was able to complete itself.
</summary>
</histogram>
<histogram name="Android.ChildProcessLauncher.OnServiceConnectedTimedOutResult"
enum="OnServiceConnectedTimedOutResult" expires_after="2022-01-02">
<owner>boliu@chromium.org</owner>
<owner>src/base/android/OWNERS</owner>
<summary>
When ChildProcessConnection fallback is enabled (Android 10+ for sandboxed
services), this is recorded after the timeout (10s) of every
ChildProcessConnection launch. Record whether fallback operation is
performed.
</summary>
</histogram>
<histogram name="Android.ChildProcessStartTimeV2{type}" units="ms"
expires_after="2021-12-13">
<owner>cduvall@chromium.org</owner>
<owner>boliu@chromium.org</owner>
<summary>
Measures time from {type} child process starts to right before main. Only
recorded on Android N+. Zygote measurements are recorded on Q+.
</summary>
<token key="type">
<variant name=".All" summary="all (excluding zygote)"/>
<variant name=".Isolated" summary="isolated"/>
<variant name=".NotIsolated" summary="non-isolated"/>
<variant name=".Zygote" summary="app zygote"/>
</token>
</histogram>
<histogram name="Android.ChildProcessStartTime{type}" units="ms"
expires_after="2021-09-18">
<obsolete>
Removed in December 2020, use Android.ChildProcessStartTimeV2.* instead
which allows timings up to 3 min.
</obsolete>
<owner>cduvall@chromium.org</owner>
<owner>boliu@chromium.org</owner>
<summary>
Measures time from {type} child process starts to right before main. Only
recorded on Android N+.
</summary>
<token key="type">
<variant name=".All" summary="all"/>
<variant name=".Isolated" summary="isolated"/>
<variant name=".NotIsolated" summary="non-isolated"/>
</token>
</histogram>
<histogram name="Android.ChromeActivity.Type" enum="ChromeActivityType"
expires_after="never">
<!-- expires-never: Used to classify UMA reports by the dashboards. -->
<owner>peconn@chromium.org</owner>
<owner>src/base/metrics/OWNERS</owner>
<summary>
Recorded at the same time as &quot;CustomTabs.Visible&quot;, this metric
should eventually replace that one. This additionally distinguishes between
Trusted Web Activities, WebAPKs and Webapps.
As of M87, this histogram is logged on a log start, rather than log end to
tag more logs.
</summary>
</histogram>
<histogram
name="Android.ChromeBrowserProvider.CallerHasPermission{ProviderPermissionType}"
enum="ClientAppId" expires_after="2021-06-28">
<obsolete>
ChromeBrowserProvider removed in 03/2021.
</obsolete>
<owner>yfriedman@chromium.org</owner>
<summary>
Android: Count of requests to Chrome browser which are granted to other apps
to read/write user's bookmarks and history. Only records cases when the app
has permission according to Android's permission manager.
{ProviderPermissionType}
</summary>
<token key="ProviderPermissionType" variants="ProviderPermissionType">
<variant name=""/>
</token>
</histogram>
<histogram
name="Android.ChromeBrowserProvider.SignaturePassed{ProviderPermissionType}"
enum="ClientAppId" expires_after="2021-06-28">
<obsolete>
ChromeBrowserProvider removed in 03/2021.
</obsolete>
<owner>yfriedman@chromium.org</owner>
<summary>
Android: Count of requests to Chrome browser which are granted to other apps
to read/write user's bookmarks and history. Only records cases where the app
is a system app or signed by Google. {ProviderPermissionType}
</summary>
<token key="ProviderPermissionType" variants="ProviderPermissionType">
<variant name=""/>
</token>
</histogram>
<histogram name="Android.ChromeStartupDelegate.FailureReason"
enum="ChromeStartupDelegateFailureType" expires_after="2022-01-09">
<owner>gangwu@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records the failure reason for ChromeStartupDelegate requests. Recorded at
most once on application startup.
</summary>
</histogram>
<histogram name="Android.ChromeStartupDelegate.Result"
enum="ChromeStartupDelegateResult" expires_after="2022-01-09">
<owner>gangwu@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records the result for ChromeStartupDelegate. Recorded on application
startup.
</summary>
</histogram>
<histogram name="Android.ChromeStartupDelegate.{Result}.Time" units="ms"
expires_after="2021-07-01">
<obsolete>
Deprecated as of 07/2021
</obsolete>
<owner>gangwu@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records the time taken to fetch a result for ChromeStartupDelegate. Recorded
on application startup.
</summary>
<token key="Result">
<variant name="All"/>
<variant name="Allow"/>
<variant name="Disallow"/>
<variant name="Failure"/>
</token>
</histogram>
<histogram name="Android.CompressedResources.ExtractionBlockingTime" units="ms"
expires_after="M82">
<obsolete>
Removed in M82.
</obsolete>
<owner>estevenson@chromium.org</owner>
<owner>agrieve@chromium.org</owner>
<summary>
The amount of time Chrome spends blocked on resource extraction. Generally,
extraction is completed in the background but in certain cases a main-thread
getResources() call may block on resource extraction.
</summary>
</histogram>
<histogram name="Android.CompressedResources.ExtractionStatus"
enum="AndroidResourceExtractionStatus" expires_after="2021-01-24">
<obsolete>
Removed in M82.
</obsolete>
<owner>estevenson@chromium.org</owner>
<owner>agrieve@chromium.org</owner>
<summary>
Describes the result of Android resource extraction, and is recorded once
per browser start as part of deferred startup (not at time of extraction).
</summary>
</histogram>
<histogram name="Android.CompressedResources.ExtractionTime" units="ms"
expires_after="2021-01-24">
<obsolete>
Removed in M82.
</obsolete>
<owner>estevenson@chromium.org</owner>
<owner>agrieve@chromium.org</owner>
<summary>
The amount of time spent on resource extraction, whether or not extraction
was performed in the background or foreground.
</summary>
</histogram>
<histogram name="Android.ContactsPicker.AddressHasDerivedField"
enum="AddressHasDerivedField" expires_after="2020-09-01">
<owner>finnur@chromium.org</owner>
<owner>rayankans@chromium.org</owner>
<summary>
Measures whether the address selected from the contacts picker has derived
fields. Derived fields refer to the individual attributes of a full address,
such as city, country, region, or postcode.
</summary>
</histogram>
<histogram name="Android.ContactsPicker.ContactCount" units="Contacts"
expires_after="2020-09-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the total number of contacts shown in the contacts picker. Measured
once when the Contacts Picker dialog is dismissed.
</summary>
</histogram>
<histogram name="Android.ContactsPicker.DialogAction"
enum="ContactsPickerDialogAction" expires_after="2020-11-29">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records which action the user takes in the ContactsPickerDialog. Measured
once when the Contacts Picker dialog is dismissed.
</summary>
</histogram>
<histogram name="Android.ContactsPicker.PropertiesRequested"
units="ContactsPickerProperties" expires_after="2020-11-29">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
The contact properties requested by the website (names, emails, telephone
numbers). Measured once when the Contacts Picker dialog is dismissed.
</summary>
</histogram>
<histogram name="Android.ContactsPicker.SelectCount" units="Contacts"
expires_after="2021-04-04">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the total number of contacts selected in the contacts picker.
Measured once when the Contacts Picker dialog is dismissed.
</summary>
</histogram>
<histogram name="Android.ContactsPicker.SelectPercentage" units="%"
expires_after="2020-09-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the percentage of contacts selected in the contacts picker.
Measured once when the Contacts Picker dialog is dismissed.
</summary>
</histogram>
<histogram name="Android.DarkTheme.DarkSearchRequested" enum="Boolean"
expires_after="2021-10-25">
<obsolete>
Removed April 2021; experiment is done and the feature code was removed.
</obsolete>
<owner>wylieb@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records if Chrome altered a google homepage/search request to include the
dark theme. Recorded only when navigating to google or google search.
Histogram total count will be the total number of requests to the google
hompage or google search.
</summary>
</histogram>
<histogram name="Android.DarkTheme.EnabledReason" enum="DarkThemeEnabledReason"
expires_after="2021-12-26">
<owner>twellington@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the reason why dark theme is enabled when dark theme is visible to
user.
</summary>
</histogram>
<histogram name="Android.DarkTheme.EnabledState" enum="BooleanEnabled"
expires_after="2021-12-26">
<owner>twellington@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records whether dark theme is enabled or not on cold start and when the
enabled state changes.
</summary>
</histogram>
<histogram name="Android.DarkTheme.Preference.State"
enum="DarkThemePreferences" expires_after="2021-12-26">
<owner>twellington@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records user theme preference of system default, light or dark theme on cold
start and when the theme preference changes.
</summary>
</histogram>
<histogram name="Android.DefaultBrowserPromo.DialogShown"
enum="AndroidDefaultBrowserPromoType" expires_after="2021-05-30">
<obsolete>
Removed Dec 2020; experiment is done and the data isn't useful.
</obsolete>
<owner>lazzzis@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>pavely@chromium.org</owner>
<summary>
Records the current default browser state when the primer dialog prompting
users to change their default browser is shown.
</summary>
</histogram>
<histogram
name="Android.DefaultBrowserPromo.IntentReceivedFromDisambiguationSheet"
enum="AndroidDefaultBrowserPromoOutcomeType" expires_after="2021-03-26">
<obsolete>
Removed Dec 2020; experiment is done and the data isn't useful.
</obsolete>
<owner>lazzzis@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>pavely@chromium.org</owner>
<summary>
Records the current default browser state if the activity receives an intent
through the disambiguation sheet that is displayed in response to the
default browser promo.
</summary>
</histogram>
<histogram name="Android.DefaultBrowserPromo.Outcome.NoDefault"
enum="AndroidDefaultBrowserPromoOutcomeType" expires_after="2021-08-01">
<obsolete>
Removed Mar 2021; experiment is done and the data isn't useful.
</obsolete>
<owner>lazzzis@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>pavely@chromium.org</owner>
<summary>
The final default browser state (outcome) after the user has been prompted
to set Chrome as the default when no browser is set as the default
initially. Recorded when the system UI prompting the user to change their
default is dismissed.
</summary>
</histogram>
<histogram name="Android.DefaultBrowserPromo.Outcome.OtherDefault"
enum="AndroidDefaultBrowserPromoOutcomeType" expires_after="2021-08-01">
<obsolete>
Removed Mar 2021; experiment is done and the data isn't useful.
</obsolete>
<owner>lazzzis@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>pavely@chromium.org</owner>
<summary>
The final default browser state (outcome) after the user has been prompted
to set Chrome as the default when another browser is set as the default
initially. Recorded when the system UI prompting the user to change their
default is dismissed.
</summary>
</histogram>
<histogram name="Android.DefaultBrowserPromo.RoleManagerShown"
enum="AndroidDefaultBrowserPromoType" expires_after="2021-08-01">
<obsolete>
Removed Mar 2021; experiment is done and the data isn't useful.
</obsolete>
<owner>lazzzis@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>pavely@chromium.org</owner>
<summary>
Records the default browser state when the Android Q+ role manager dialog is
shown.
</summary>
</histogram>
<histogram name="Android.DefaultBrowserPromo.UIDismissalReason.NoDefault"
enum="AndroidDefaultBrowserPromoUserActionType" expires_after="2021-06-06">
<obsolete>
Removed Dec 2020; experiment is done and the data isn't useful.
</obsolete>
<owner>lazzzis@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>pavely@chromium.org</owner>
<summary>
Records which button click led to the default browser promo dialog being
dismissed for dialogs shown when there is currently no default browser set.
</summary>
</histogram>
<histogram name="Android.DefaultBrowserPromo.UIDismissalReason.OtherDefault"
enum="AndroidDefaultBrowserPromoUserActionType" expires_after="2021-05-30">
<obsolete>
Removed Dec 2020; experiment is done and the data isn't useful.
</obsolete>
<owner>lazzzis@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>pavely@chromium.org</owner>
<summary>
Records which button click led to the default browser promo dialog being
dismissed for dialogs shown when another browser is set as the default.
</summary>
</histogram>
<histogram name="Android.DeviceSize.LargestDisplaySize" units="dp"
expires_after="2021-12-12">
<owner>twellington@chromium.org</owner>
<owner>tedchoc@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the largest display dimension in dp during deferred startup. The
display size is not affected by Android N multi-window mode. Clamped at
200dp to 1200dp.
</summary>
</histogram>
<histogram name="Android.DeviceSize.SmallestDisplaySize" units="dp"
expires_after="2021-12-12">
<owner>twellington@chromium.org</owner>
<owner>tedchoc@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the smallest display dimension in dp during deferred startup. The
display size is not affected by Android N multi-window mode. Clamped at 0 to
1000dp.
</summary>
</histogram>
<histogram name="Android.DexFixer" enum="DexFixerReason"
expires_after="2022-01-30">
<owner>agrieve@chromium.org</owner>
<owner>cduvall@chromium.org</owner>
<summary>
Records the number of times Chrome runs &quot;cmd package compile&quot; to
fix dexopt issues, and for what reason.
</summary>
</histogram>
<histogram name="Android.DirectAction.Perform" enum="DirectActionId"
expires_after="2022-10-10">
<owner>arbesser@google.com</owner>
<owner>autofill_assistant@google.com</owner>
<summary>
Counts calls to Activity.onPerformDirectAction made by the system on behalf
of the assist app and which action was performed, if any. Available starting
with Android Q.
</summary>
</histogram>
<histogram name="Android.Download.InfoBar.CloseButtonClicked"
enum="DownloadInfoBarState" expires_after="M85">
<owner>shaktisahu@chromium.org</owner>
<summary>
Records the state of the download infobar when the user taps on the
infobar's close button.
</summary>
</histogram>
<histogram name="Android.Download.InfoBar.Shown"
enum="DownloadInfoBar.ShownState" expires_after="2020-04-26">
<owner>shaktisahu@chromium.org</owner>
<summary>
Records various types of messages representing the state of the downloads as
they are shown on the download infobar.
</summary>
</histogram>
<histogram name="Android.Download.Rename.Dialog.Action"
enum="Android.Download.Rename.Dialog.Action" expires_after="2021-08-09">
<owner>hesen@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records various actions taken by the user on the rename dialog in download
home.
</summary>
</histogram>
<histogram name="Android.Download.Rename.Result"
enum="Android.Download.Rename.Result" expires_after="2021-08-09">
<owner>hesen@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records various error codes when users try to rename a download in a
download home, recorded when backend rename callback is compeleted.
</summary>
</histogram>
<histogram name="Android.DownloadManager.Cancel"
enum="Android.DownloadManager.Cancel.CancelFrom" expires_after="M85">
<owner>shaktisahu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>Recorded when a download is cancelled from Java.</summary>
</histogram>
<histogram name="Android.DownloadManager.Filter"
enum="AndroidDownloadFilterType" expires_after="2020-01-26">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Recorded when the user selects a filter from the Chrome download manager
navigation drawer.
</summary>
</histogram>
<histogram name="Android.DownloadManager.ForegroundServiceLifecycle"
enum="DownloadNotificationForegroundLifecycle" expires_after="never">
<!-- expires-never: Download foreground notification stability metric. -->
<owner>xingliu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records instances where the foreground undergoes a lifecycle change (when
the foreground starts, changes pinned notification, or stops).
</summary>
</histogram>
<histogram
name="Android.DownloadManager.InitialCount.Viewed{AndroidDownloadTypes}"
units="units" expires_after="2020-10-04">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
The number of non-incognito download items displayed that are already viewed
by the user at any time, recorded when the download UI is initialized.
{AndroidDownloadTypes}
</summary>
<token key="AndroidDownloadTypes" variants="AndroidDownloadTypes">
<variant name=""/>
</token>
</histogram>
<histogram name="Android.DownloadManager.InitialCount{AndroidDownloadTypes}"
units="units" expires_after="2021-01-24">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
The number of non-incognito download items displayed when the download UI is
initialized. {AndroidDownloadTypes}
</summary>
<token key="AndroidDownloadTypes" variants="AndroidDownloadTypes">
<variant name=""/>
</token>
</histogram>
<histogram name="Android.DownloadManager.Item.OpenFailed"
enum="AndroidDownloadFilterType" expires_after="M81">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>Recorded when a download fails to open.</summary>
</histogram>
<histogram name="Android.DownloadManager.Item.OpenSucceeded"
enum="AndroidDownloadFilterType" expires_after="M85">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>Recorded when a download is opened.</summary>
</histogram>
<histogram name="Android.DownloadManager.List.View.Action"
enum="Android.DownloadManager.List.View.Actions" expires_after="2021-01-24">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>The count of Download Home list entry actions taken.</summary>
</histogram>
<histogram name="Android.DownloadManager.Menu.Action"
enum="Android.DownloadManager.Menu.Actions" expires_after="2022-01-23">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>The count of Download Home top level menu actions taken.</summary>
</histogram>
<histogram name="Android.DownloadManager.Menu.Delete.SelectedCount"
units="units" expires_after="M81">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
The number of items selected when performing a multi-delete action.
</summary>
</histogram>
<histogram name="Android.DownloadManager.Menu.Share.SelectedCount"
units="units" expires_after="M81">
<owner>dtrainor@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
The number of items selected when performing a multi-share action.
</summary>
</histogram>
<histogram name="Android.DownloadManager.NotificationInteraction"
enum="DownloadNotificationInteractions" expires_after="2022-01-02">
<owner>xingliu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records instances where a user interacts with a download notification (ie.
clicks on, pauses, resumes, cancels).
</summary>
</histogram>
<histogram name="Android.DownloadManager.OpenSource.Audio"
enum="AndroidDownloadOpenSource" expires_after="2022-02-20">
<owner>xingliu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>Records how users open audio download files on Android.</summary>
</histogram>
<histogram name="Android.DownloadManager.OpenSource.Other"
enum="AndroidDownloadOpenSource" expires_after="2022-02-06">
<owner>xingliu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records the entry point for users opening downloaded files on Android, that
are not audio nor video.
</summary>
</histogram>
<histogram name="Android.DownloadManager.OpenSource.Video"
enum="AndroidDownloadOpenSource" expires_after="2022-02-06">
<owner>xingliu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>Records how users open video download files on Android.</summary>
</histogram>
<histogram name="Android.DownloadManager.ServiceStopped.DownloadForeground"
enum="DownloadNotificationServiceStopped" expires_after="never">
<owner>xingliu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<!-- expires-never: Download foreground notification stability metric. -->
<summary>
Records instances of DownloadForegroundService stops. The number of expected
stops (stopped) and unexpected stops (task removed, low memory, etc) can be
compared to get a sense of how often the service crashes to see how it
handles restarts. For example, the number of times the service is stopped
because of low memory can be compared to the number of times the service has
been destroyed to see how frequently it occurs. Or, the number of start
sticky's will indicate how often the service is able to restart due to an
unexpected stop.
</summary>
</histogram>
<histogram name="Android.DownloadManager.ServiceStopped.DownloadNotification"
enum="DownloadNotificationServiceStopped" expires_after="M85">
<obsolete>
Deprecated as of 10/2020
</obsolete>
<owner>xingliu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records instances of DownloadNotificationService stops. The number of
expected stops (stopped) and unexpected stops (task removed, low memory,
etc) can be compared to get a sense of how often the service crashes to see
how it handles restarts. For example, the number of times the service is
stopped because of low memory can be compared to the number of times the
service has been destroyed to see how frequently it occurs. Or, the number
of start sticky's will indicate how often the service is able to restart due
to an unexpected stop.
</summary>
</histogram>
<histogram name="Android.DownloadManager.Share.Count" units="units"
expires_after="M86">
<owner>twellington@chromium.org</owner>
<owner>ianwen@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>The number of downloads shared at the same time.</summary>
</histogram>
<histogram name="Android.DownloadManager.Share.FileTypes"
enum="AndroidDownloadFilterType" expires_after="2020-03-01">
<owner>twellington@chromium.org</owner>
<owner>ianwen@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Recorded when downloads are shared through the download manager. A recorded
value of &quot;All&quot; indicates that multiple types of downloads were
shared.
</summary>
</histogram>
<histogram name="Android.DownloadManager.SpaceUsed" units="%"
expires_after="M81">
<owner>twellington@chromium.org</owner>
<owner>ianwen@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>The percentage of total storage downloads consume.</summary>
</histogram>
<histogram
name="Android.DownloadManager.Thumbnail.MaxRequiredStretch{AndroidDownloadTypes}"
units="%" expires_after="2021-01-30">
<owner>shaktisahu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records the required stretch of the smaller dimension before displaying an
image on download home. Measured in percentage. {AndroidDownloadTypes}
</summary>
<token key="AndroidDownloadTypes" variants="AndroidDownloadTypes">
<variant name="">
<obsolete>
Base histogram. Use suffixes of this histogram instead.
</obsolete>
</variant>
</token>
</histogram>
<histogram name="Android.DownloadPage.OpenSource"
enum="AndroidDownloadOpenSource" expires_after="2022-02-16">
<owner>xingliu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records the entry point for users opening the download page on Android.
</summary>
</histogram>
<histogram base="true" name="Android.FeatureModules.AvailabilityStatus"
enum="FeatureModuleAvailabilityStatus" expires_after="2022-06-13">
<!-- Name completed by histogram_suffixes
name="AndroidFeatureModuleName" -->
<owner>agrieve@chromium.org</owner>
<owner>fredmello@chromium.org</owner>
<owner>tiborg@chromium.org</owner>
<owner>wnwen@chromium.org</owner>
<summary>
Availability status for each dynamic feature module. Reported once per
Chrome start. This metric's purpose is to measure a feature module's install
penetration over time.
</summary>
</histogram>
<histogram base="true" name="Android.FeatureModules.CachedAwakeInstallDuration"
units="ms" expires_after="2022-06-13">
<!-- Name completed by histogram_suffixes
name="AndroidFeatureModuleName" -->
<owner>agrieve@chromium.org</owner>
<owner>fredmello@chromium.org</owner>
<owner>tiborg@chromium.org</owner>
<owner>wnwen@chromium.org</owner>
<summary>
Duration of successful installs for each dynamic feature module. Only
contains install durations for modules first requested *before* Chrome
started last and may therefore be installed from cache. Omits deep sleep
time.
</summary>
</histogram>
<histogram base="true" name="Android.FeatureModules.InstallingStatus"
enum="FeatureModuleInstallingStatus" expires_after="2022-06-13">
<!-- Name completed by histogram_suffixes
name="AndroidFeatureModuleName" -->
<owner>agrieve@chromium.org</owner>
<owner>fredmello@chromium.org</owner>
<owner>tiborg@chromium.org</owner>
<owner>wnwen@chromium.org</owner>
<summary>
Install status counter for each dynamic feature module. Recorded during
on-demand and deferred installs.
</summary>
</histogram>
<histogram base="true" name="Android.FeatureModules.InstallStatus"
enum="FeatureModuleInstallStatus" expires_after="2022-06-13">
<!-- Name completed by histogram_suffixes
name="AndroidFeatureModuleName" -->
<owner>agrieve@chromium.org</owner>
<owner>fredmello@chromium.org</owner>
<owner>tiborg@chromium.org</owner>
<owner>wnwen@chromium.org</owner>
<summary>
Install status for each dynamic feature module. Recorded after the
installation has finished.
</summary>
</histogram>
<histogram name="Android.FeatureModules.StartupTime" units="ms"
expires_after="2022-06-13">
<owner>agrieve@chromium.org</owner>
<owner>fredmello@chromium.org</owner>
<owner>tiborg@chromium.org</owner>
<owner>wnwen@chromium.org</owner>
<summary>
Length of time during startup used by module framework code. This is our
metric to improve and used to guard against regressions.
</summary>
</histogram>
<histogram base="true"
name="Android.FeatureModules.UncachedAwakeInstallDuration" units="ms"
expires_after="2022-06-13">
<!-- Name completed by histogram_suffixes
name="AndroidFeatureModuleName" -->
<owner>agrieve@chromium.org</owner>
<owner>fredmello@chromium.org</owner>
<owner>tiborg@chromium.org</owner>
<owner>wnwen@chromium.org</owner>
<summary>
Duration of successful installs for each dynamic feature module. Only
contains install durations of modules first requested *after* Chrome started
last and are therefore unlikely to be installed from cache. Omits deep sleep
time.
</summary>
</histogram>
<histogram name="Android.FontLookup.Blink.DLFontsLatencyFailure" units="ms"
expires_after="2021-09-30">
<owner>drott@chromium.org</owner>
<owner>layout-dev@chromium.org</owner>
<summary>
Records the latency of looking up a local font from Android downloadable
fonts at the time of instantiating the font in the fonts backend in the
renderer. Includes time for error checking and attempting to create the font
from the retrieved blob, if there is one. Only records timings for
situations in which a font could not be instantiated.
</summary>
</histogram>
<histogram name="Android.FontLookup.Blink.DLFontsLatencySuccess" units="ms"
expires_after="2021-12-05">
<owner>drott@chromium.org</owner>
<owner>layout-dev@chromium.org</owner>
<summary>
Records the latency of looking up a local font from Android downloadable
fonts at the time of instantiating the font in the fonts backend in the
renderer. Includes time for error checking and attempting to create the font
from the retrieved blob, if there is one. Only records timings for
situations in which a font was successfully instantiated and returned.
</summary>
</histogram>
<histogram name="Android.FontLookup.Blink.GetTableLatency" units="ms"
expires_after="2022-08-12">
<owner>drott@chromium.org</owner>
<owner>cduvall@chromium.org</owner>
<owner>layout-dev@chromium.org</owner>
<summary>
Records the latency of fetching the font name lookup table from the browser.
The table is cached by the renderer so will usually only be fetched once per
renderer startup. This is recorded when an attempt is made to fetch the
table, typically once per renderer on the first font lookup for that
process. If the original fetch fails, this will be recorded the next time a
font lookup is requested.
</summary>
</histogram>
<histogram name="Android.FontLookup.FetchFontName" enum="FetchFontName"
expires_after="2021-12-15">
<owner>chouinard@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records font fetch requests by font name. These results may be used to
determine whether it remains worthwhile to preload fonts that are available
for renderer font match requests.
</summary>
</histogram>
<histogram name="Android.FontLookup.FetchFontResult" enum="FetchFontResult"
expires_after="2021-12-15">
<owner>chouinard@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records the result of font fetch requests made to the GMS Core Android
downloadable font provider. The result may be success, or failure with a
reason. In the case of multiple failures, only the first one encountered is
reported. See implementation at AndroidFontLookupImpl.
</summary>
</histogram>
<histogram name="Android.FontLookup.GmsFontRequest.Time" units="ms"
expires_after="2021-12-15">
<owner>chouinard@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records the time taken to make a fetchFonts font request to GMS Core via the
Android downloadable font provider API. This metric may be used to determine
whether it's reasonable to execute this task on the IO thread rather than
posting to a background thread.
</summary>
</histogram>
<histogram name="Android.FontLookup.MatchLocalFontByUniqueName.Time" units="ms"
expires_after="2021-12-15">
<owner>chouinard@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records the time taken to respond to a request from the renderer to fetch a
specific font file from the GMS Core Android downloadable font provider.
</summary>
</histogram>
<histogram
name="Android.Fonts.TimeDownloadableFontsRetrievedAfterPostInflationStartup{ActivityType}"
units="ms" expires_after="2021-12-15">
<owner>sinansahin@google.com</owner>
<owner>twellington@chromium.org</owner>
<summary>
Time it took to retrieve the downloadable fonts after post-inflation
startup. Mutually exclusive with *BeforePostInflationStartup. Recorded when
all downloadable fonts are retrieved. {ActivityType}
</summary>
<token key="ActivityType" variants="ActivityType">
<variant name=""/>
</token>
</histogram>
<histogram
name="Android.Fonts.TimeDownloadableFontsRetrievedBeforePostInflationStartup{ActivityType}"
units="ms" expires_after="2021-12-15">
<owner>sinansahin@google.com</owner>
<owner>twellington@chromium.org</owner>
<summary>
Amount of time the downloadable fonts were retrieved before post-inflation
startup. Mutually exclusive with *AfterPostInflationStartup. Recorded after
AsyncInitializationActivity#performPostInflationStartup. {ActivityType}
</summary>
<token key="ActivityType" variants="ActivityType">
<variant name=""/>
</token>
</histogram>
<histogram
name="Android.Fonts.TimeToRetrieveDownloadableFontsAfterOnCreate{ActivityType}"
units="ms" expires_after="2021-12-15">
<owner>sinansahin@google.com</owner>
<owner>twellington@chromium.org</owner>
<summary>
Time it took to retrieve the downloadable fonts after Application#OnCreate.
Recorded when all downloadable fonts are retrieved. {ActivityType}
</summary>
<token key="ActivityType" variants="ActivityType">
<variant name=""/>
</token>
</histogram>
<histogram name="Android.HistoryPage.ClearBrowsingData.PerProfileType"
enum="BrowserProfileType" expires_after="2021-12-31">
<owner>sideyilmaz@chromium.org</owner>
<owner>chrome-incognito@google.com</owner>
<summary>
Records the clicks on Clear Browsing Data button at history page for each
profile type in Android.
</summary>
</histogram>
<histogram name="Android.HomeButton.PerProfileType" enum="BrowserProfileType"
expires_after="2021-12-31">
<owner>sideyilmaz@chromium.org</owner>
<owner>chrome-incognito@google.com</owner>
<summary>
Records the clicks on Home button in Android toolbar for each profile type.
</summary>
</histogram>
<histogram name="Android.Input.EditableContentTypes" enum="EditableContentType"
expires_after="2022-04-09">
<owner>alexmitra@chromium.org</owner>
<owner>ctzsm@chromium.org</owner>
<owner>nator@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Tracks whether a WebView is being used to get user input and how the input
is being collected (through an input tag, textarea tag or through an element
with the contenteditable attribute). We will log this each time the user
focuses on an element.
</summary>
</histogram>
<histogram name="Android.InstantApps.ApiCallDurationWithApp" units="ms"
expires_after="M81">
<owner>sbirch@google.com</owner>
<summary>
Measures the amount of time spent in the getInstantAppIntent() API call when
the API was able to find an Instant App for the URL. This is recorded for
external intents coming into Chrome only and measures the delay before we
dispatch the intent to Instant Apps.
</summary>
</histogram>
<histogram name="Android.InstantApps.ApiCallDurationWithoutApp" units="ms"
expires_after="2022-01-31">
<owner>sbirch@google.com</owner>
<owner>tedchoc@chromium.org</owner>
<summary>
Measures the amount of time spent in the getInstantAppIntent() API call when
the API was not able to find an Instant App for the URL. This is recorded
for external intents coming into Chrome that get checked for their Instant
Apps eligibility, but end up being loaded in Chrome. It's critical to keep
this latency low for our startup performance.
</summary>
</histogram>
<histogram name="Android.InstantApps.CallSource" enum="InstantAppsCallSource"
expires_after="2022-01-31">
<owner>sbirch@google.com</owner>
<owner>tedchoc@chromium.org</owner>
<summary>
For intents to load a web page in browser from Instant Apps, records where
the request to load came from.
</summary>
</histogram>
<histogram name="Android.InstantApps.DirectInstantAppsIntent"
enum="DirectIntentType" expires_after="M81">
<owner>sbirch@google.com</owner>
<summary>
Records events that occur when a user clicks on an intent:// URL that is
dispatched to instant apps. The intent:// URLs to the Instant Apps are
explicitly disabled unless they are launched from Google SERP, but we record
other attempts as well.
</summary>
</histogram>
<histogram name="Android.InstantApps.EligiblePageLoaded" enum="Boolean"
expires_after="2022-01-31">
<owner>sbirch@google.com</owner>
<owner>tedchoc@chromium.org</owner>
<summary>
Records whether any given successful page load (for http and https schemes
only) could have been handled by an Instant App.
</summary>
</histogram>
<histogram name="Android.InstantApps.FallbackDuration" units="ms"
expires_after="2022-01-31">
<owner>sbirch@google.com</owner>
<owner>tedchoc@chromium.org</owner>
<summary>
Measures the time from when we first received an eligible intent for Instant
Apps to the time we processed it in the case where the Instant Apps activity
had to invoke a fallback intent. This happens only on Android N and older.
</summary>
</histogram>
<histogram name="Android.InstantApps.HandleIntentDuration" units="ms"
expires_after="M81">
<owner>sbirch@google.com</owner>
<summary>
Measures the amount of time spent triaging an incoming event to decide
whether it needs to be routed to Instant Apps. This is time from
ChromeLauncherActivity.onCreate() call to the time either startActivity() is
called or the request proceeds. This is a superset of
Android.InstantApps.ApiCallDurationWith[out]App.
</summary>
</histogram>
<histogram name="Android.InstantApps.ShouldShowBanner" enum="InstantAppsBanner"
expires_after="2022-01-31">
<owner>sbirch@google.com</owner>
<owner>tedchoc@chromium.org</owner>
<summary>
Logs the reasons the banner is shown or hidden on an instant apps eligible
pages. Triggered every time asynchronous Instant Apps API indicates the
currently loaded page is instant apps eligible. Does not include Instant
Apps eligible pages loaded directly through the omnibox.
</summary>
</histogram>
<histogram name="Android.Intent.LaunchExternalAppFormSubmitHasUserGesture"
enum="Boolean" expires_after="M74">
<owner>tedchoc@chromium.org</owner>
<owner>thildebr@chromium.org</owner>
<summary>
When an external application was launched as a result of a form submit, this
tracks whether there was a user gesture associated with the submit.
</summary>
</histogram>
<histogram name="Android.Intent.OverrideUrlLoadingIntentAction"
enum="StandardActions" expires_after="2021-03-21">
<obsolete>
Removed in M91. No longer tracked.
</obsolete>
<owner>mthiesse@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
When a site navigates to a URL that can be parsed as an Intent, record the
action of that Intent.
</summary>
</histogram>
<histogram name="Android.Intent.WebIntentToOtherBrowser" enum="Boolean"
expires_after="M98">
<owner>mthiesse@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
When a site attempts to navigate to a supported URL with an intent URL that
targets other browser-like apps.
</summary>
</histogram>
<histogram name="Android.IsLastSharedAppInfoRetrieved"
enum="BooleanIsLastSharedAppInfoRetrieved" expires_after="M77">
<owner>tedchoc@chromium.org</owner>
<owner>clank-team@google.com</owner>
<summary>
Signifies whether the last shared app information is retrieved successfully
or not. This is logged when configuring the direct sharing menu item.
</summary>
</histogram>
<histogram base="true" name="Android.IsolatedSplits.ClassLoaderReplaced"
enum="BooleanYesNo" expires_after="2022-01-10">
<!-- Name completed by histogram_suffixes name="AndroidFeatureModuleName" -->
<owner>cduvall@chromium.org</owner>
<owner>agrieve@chromium.org</owner>
<summary>
Whether a split Context has had its ClassLoader replaced due to b/172602571.
This is recorded every time a split Context is created.
</summary>
</histogram>
<histogram base="true" name="Android.IsolatedSplits.ContextCreateTime"
units="ms" expires_after="2022-02-06">
<!-- Name completed by histogram_suffixes name="AndroidFeatureModuleName" -->
<owner>cduvall@chromium.org</owner>
<owner>agrieve@chromium.org</owner>
<summary>
Amount of time it takes to create a new Context for a split. This will only
be recorded if isolated splits are enabled.
</summary>
</histogram>
<histogram base="true" name="Android.IsolatedSplits.PreloadWaitTime" units="ms"
expires_after="2022-02-06">
<!-- Name completed by histogram_suffixes name="AndroidFeatureModuleName" -->
<owner>cduvall@chromium.org</owner>
<owner>agrieve@chromium.org</owner>
<summary>
Amount of time spent waiting for a split preload task to finish. This will
only be recorded if isolated splits are enabled.
</summary>
</histogram>
<histogram name="Android.Jank.FrameDuration{Scenario}" units="ms"
expires_after="2021-09-30">
<owner>salg@google.com</owner>
<owner>ssid@chromium.org</owner>
<summary>
Amount of time it takes to draw Android UI frames on ChromeTabbedActivity as
measured by Android's FrameMetrics API. Each frame's draw duration is stored
individually {Scenario}.
The samples for this metric (Along with Android.Jank.JankBursts and
Android.Jank.MissedFrames) are manually passed from Java to C++ to be
recorded. This is done instead of recording in real time from Java due to
the large number of generated samples (potentially ~60 per second).
Recording them directly from Java would result in a JNI call for each sample
which could cause performance issues.
FrameMetrics only reports frames with Android UI updates. An idle omnibox
would report only 2 frames per second due to the cursor blink animation.
Scrolling through a web page may record no frames if no Android UI (like the
address bar) updates.
</summary>
<token key="Scenario" variants="JankMetricsScenarios"/>
</histogram>
<histogram name="Android.Jank.JankBursts{Scenario}" units="ms"
expires_after="2021-09-30">
<owner>salg@google.com</owner>
<owner>ssid@chromium.org</owner>
<summary>
Recorded alongside Android.Jank.FrameDuration {Scenario}. Each sample
represents a jank burst: the total frame duration of one or many janky
frames drawn in quick succession. For example, the following sequence of
frame durations: [2ms, 100ms, 100ms, 100ms, 2ms, 2ms, 2ms, 100ms, 2ms] would
be recorded as 2 jank bursts: [300ms, 100ms].
Jank bursts may include non-janky frames if both adjacent frames are janky,
example: [2ms, 100ms, 100ms, 2ms, 100ms, 100ms, 2ms] would count as a single
jank burst: [402ms].
Jank bursts are started with a single janky frame, and end with either 2 or
more non-janky frames or a period of inactivity between janky frames
(&gt;50ms). For example: [100ms, 100ms, (...500ms without new frames
later...), 100ms] would be recorded as 2 jank bursts: [200ms, 100ms]. The
third frame is counted separately because of the period of inactivity before
it indicates its jankyness is caused by a different event or animation. (see
go/clank-zero-browser-jank for more details).
</summary>
<token key="Scenario" variants="JankMetricsScenarios"/>
</histogram>
<histogram name="Android.Jank.MissedFrames{Scenario}" units="frames"
expires_after="2021-09-30">
<owner>salg@google.com</owner>
<owner>ssid@chromium.org</owner>
<summary>
Number of frames that Android's FrameMetrics API skipped reporting on
because of high main thread activity. This metric is recorded at the same
time as Android.Jank.* histograms {Scenario}. Each sample is the number of
frames that we didn't receive timings for, so their draw duration is not
recorded in the respective Android.Jank.FrameDuration.* histogram, and (even
if its duration was greater than 16ms) it is not counted in any
Android.Jank.JankyBursts.* samples.
A high number of missed frames would mean that we are taking too long to
record frame metrics and that the other Android.Jank.* histograms may not be
accurate.
</summary>
<token key="Scenario" variants="JankMetricsScenarios"/>
</histogram>
<histogram name="Android.KernelVersion" enum="AndroidKernelVersion"
expires_after="2022-02-06">
<owner>rsesek@chromium.org</owner>
<summary>
Reports the kernel major and minor version from the utsname.release field.
The low 16 bits of each version are combined into a 32-bit integer. The
range is from [0x00020006,0x0004000a] to track kernel versions 2.6 through
4.10.
</summary>
</histogram>
<histogram name="Android.Language.UiIsSystemLanguage" enum="BooleanMatched"
expires_after="2021-12-01">
<obsolete>
Replaced by LanguageUsage.UI.Android.* Feb 2021.
</obsolete>
<owner>perrier@chromium.org</owner>
<owner>chrome-language@google.com</owner>
<summary>
Reports whether the Chrome UI language is the same as the Android system
lanaguage. Recorded once per top-level ChromeActivty start.
</summary>
</histogram>
<histogram name="Android.Language.WrongLanguageAfterResume" enum="Boolean"
expires_after="2021-12-01">
<obsolete>
Replaced by LanguageUsage.UI.Android.* Feb 2021.
</obsolete>
<owner>perrier@chromium.org</owner>
<owner>chrome-language@google.com</owner>
<summary>
Reports whether Chrome was started in a language other than the system
language but we support the system language. That can happen if the user
changes the system language and the required language split cannot be
installed in time.
</summary>
</histogram>
<histogram
name="Android.MainActivity.ExplicitMainViewIntentDispatched.OnCreate"
enum="BooleanDispatched" expires_after="2021-01-24">
<owner>wnwen@chromium.org</owner>
<summary>
Whether VIEW intent sent explicitly to .Main activity was dispatched by
onCreate().
</summary>
</histogram>
<histogram
name="Android.MainActivity.ExplicitMainViewIntentDispatched.OnNewIntent"
enum="BooleanDispatched" expires_after="2020-06-28">
<owner>wnwen@chromium.org</owner>
<summary>
Whether VIEW intent sent explicitly to .Main activity was dispatched by
onNewIntent().
</summary>
</histogram>
<histogram name="Android.MainActivity.UndispatchedExplicitMainViewIntentSource"
enum="ClientAppId" expires_after="M85">
<owner>wnwen@chromium.org</owner>
<summary>
Sources (ExternalAppId) of undispatched VIEW intents sent explicitly to
.Main activity alias.
</summary>
</histogram>
<histogram name="Android.ManageSpace.ActionTaken"
enum="AndroidManageSpaceButton" expires_after="M95">
<owner>dmurph@chromium.org</owner>
<summary>
Recorded when the user presses a button in the 'Manage Space' screen for
Chrome. Note: the 'Clear App Data' option is likely incorrect, as the result
of that button disables UMA recording (as we factory reset the app).
</summary>
</histogram>
<histogram name="Android.ManageSpace.ClearUnimportantTime" units="ms"
expires_after="M95">
<owner>dmurph@chromium.org</owner>
<summary>
Records the time it takes to delete all unimportant sites when the user
initiates the 'Clear Unimportant Sites' action in the 'Manage Space' screen
for Chrome.
</summary>
</histogram>
<histogram name="Android.ManageSpace.TotalDiskUsageMB" units="MB"
expires_after="M95">
<owner>dmurph@chromium.org</owner>
<summary>
Recorded when the user opens the 'Manage Space' screen for Chrome, after the
disk usage is calculated. The disk usage value represents the accumulated
disk usage by websites.
</summary>
</histogram>
<histogram name="Android.ManageSpace.UnimportantDiskUsageMB" units="MB"
expires_after="M95">
<owner>dmurph@chromium.org</owner>
<summary>
Recorded when the user opens the 'Manage Space' screen for Chrome, after the
disk usage is calculated. The disk usage value represents the accumulated
disk usage by websites that are not considered 'important'.
</summary>
</histogram>
<histogram name="Android.MemoryPressureMonitor.GetMyMemoryState.Failed.Time"
units="microseconds" expires_after="M77">
<owner>ssid@chromium.org</owner>
<summary>
The duration of each failed ActivityManager.getMyMemoryState() call made by
MemoryPressureMonitor.
Warning: This metric may include reports from clients with low-resolution
clocks (i.e. on Windows, ref. |TimeTicks::IsHighResolution()|). Such reports
will cause this metric to have an abnormal distribution. When considering
revising this histogram, see UMA_HISTOGRAM_CUSTOM_MICROSECONDS_TIMES for the
solution.
</summary>
</histogram>
<histogram name="Android.MemoryPressureMonitor.GetMyMemoryState.Succeeded.Time"
units="microseconds" expires_after="2020-04-26">
<owner>ssid@chromium.org</owner>
<summary>
The duration of each successful ActivityManager.getMyMemoryState() call made
by MemoryPressureMonitor.
Warning: This metric may include reports from clients with low-resolution
clocks (i.e. on Windows, ref. |TimeTicks::IsHighResolution()|). Such reports
will cause this metric to have an abnormal distribution. When considering
revising this histogram, see UMA_HISTOGRAM_CUSTOM_MICROSECONDS_TIMES for the
solution.
</summary>
</histogram>
<histogram name="Android.MemoryPressureNotification{AndroidProcessType}"
enum="Android.MemoryPressureNotification" expires_after="2021-12-05">
<owner>ssid@chromium.org</owner>
<summary>
Memory pressure notifications sent by Android through ComponentCallbacks2.
This metric was added 04/2018; for prior data for the browser process see
MemoryAndroid.NotificationBackground and
MemoryAndroid.NotificationForeground. {AndroidProcessType}
</summary>
<token key="AndroidProcessType">
<variant name="">
<obsolete>
Base histogram. Use suffixes of this histogram instead.
</obsolete>
</variant>
<variant name=".Browser" summary="Browser process"/>
<variant name=".ChildService"
summary="Child service process (renderer, GPU, etc.)"/>
</token>
</histogram>
<histogram name="Android.Messages.Dismissed{MessageIdentifier}"
enum="MessageDismissReason" expires_after="2022-06-01">
<owner>pavely@chromium.org</owner>
<owner>lazzzis@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Recorded once per message when the message is dismissed to capture the
dismissal reason (e.g. primary button tap, timeout). The histogram can be
used for measuring user engagement with messages of different types.
</summary>
<token key="MessageIdentifier" variants="MessageIdentifiers"/>
</histogram>
<histogram name="Android.Messages.Enqueued" enum="MessageIdentifier"
expires_after="2022-06-01">
<owner>pavely@chromium.org</owner>
<owner>lazzzis@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the message identifier each time a message is enqueued through
MessageDispatcher (the entry point to Chrome for Android's messages system).
This histogram can be used for getting a count of messages broken down by
message identifier.
</summary>
</histogram>
<histogram name="Android.Messages.Enqueued.Hidden" enum="MessageIdentifier"
expires_after="2022-06-01">
<owner>pavely@chromium.org</owner>
<owner>lazzzis@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the message identifier when an enqueued message is not immediately
displayed either because there is another message on the secreen or because
message scope (e.g. tab) is not active. This metric is recorded along with
Android.Messages.Enqueued.Hiding, which records identifier of currently
visible message.
</summary>
</histogram>
<histogram name="Android.Messages.Enqueued.Hiding" enum="MessageIdentifier"
expires_after="2022-06-01">
<owner>pavely@chromium.org</owner>
<owner>lazzzis@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Recorded when an enqueued message is not immediately displayed. This metric
records message identifier of a message currently displayed on the screen
(that prevented the enqueued message from getting displayed immediately).
INVALID_MESSAGE is recorded when the message isn't displayed because message
scope (e.g. tab) isn't active or when message queue is suspended.
</summary>
</histogram>
<histogram name="Android.Messages.Enqueued.Visible" enum="MessageIdentifier"
expires_after="2022-06-01">
<owner>pavely@chromium.org</owner>
<owner>lazzzis@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the message identifier when a message is displayed immediately when
it is enqueued. This includes cases when there are no other messages on the
screen as well as cases when the new message is high priority and causes
some other message to hide.
</summary>
</histogram>
<histogram name="Android.Messages.TimeToAction.Dismiss{MessageIdentifier}"
units="ms" expires_after="2022-06-01">
<owner>pavely@chromium.org</owner>
<owner>lazzzis@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the time interval the message was displayed on the screen before the
user dismissed it with a gesture. The metric is NOT recorded when the user
presses primary or secondary button or when the message is auto-dismissed
based on timer. The interval includes both enter and exit animation. The
metric can be used to analyze the time threshold for the user to give up
waiting for autodismiss timer and dismiss the message explicitly.
</summary>
<token key="MessageIdentifier" variants="MessageIdentifiers"/>
</histogram>
<histogram name="Android.Messages.TimeToAction{MessageIdentifier}" units="ms"
expires_after="2022-06-01">
<owner>pavely@chromium.org</owner>
<owner>lazzzis@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the time interval the message was displayed on the screen before the
user explicitly dismissed it. The metric is recorded when the user presses
primary or secondary button, or dismisses the message with a gesture. It is
not recorded when the message is auto-dismissed based on timer. The interval
includes both enter and exit animation. The metric can be used to analyze
the amount of time it takes for the user to understand the message and take
an action (e.g. click a button, dismiss the message, etc.).
</summary>
<token key="MessageIdentifier" variants="MessageIdentifiers"/>
</histogram>
<histogram name="Android.ModalDialog.SecurityFilteredTouchResult"
enum="SecurityFilteredTouchResult" expires_after="2022-04-01">
<owner>pavely@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the action taken on a security sensitive touch event in modal
dialog. As of M84 it is used for site premission dialogs.
</summary>
</histogram>
<histogram name="Android.ModerateBindingCount" units="bindings"
expires_after="M77">
<owner>tedchoc@chromium.org</owner>
<owner>clank-team@google.com</owner>
<summary>
The number of moderate bindings which were kept while Chrome process is in
the foreground. This is logged right before Chrome process goes into the
background.
</summary>
</histogram>
<histogram name="Android.MultiInstance.NumActivities" units="activities"
expires_after="2022-08-19">
<owner>jinsukkim@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records the number of running ChromeTabbedActivity's on every
ChromeTabbedActivity startup. This includes activities that may not be
visible on screen (i.e. it includes ChromeTabbedActivity's in the
&quot;stopped&quot; state). This does not include ChromeTabbedActivity's
that have been destroyed regardless of whether their owning Android Task may
be retrieved in Android Recents. Applicable to Android S+ only.
</summary>
</histogram>
<histogram name="Android.MultiInstance.NumInstances" units="instances"
expires_after="2022-08-19">
<owner>jinsukkim@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
The number of allocated instance IDs which corresponds to the number of
retrievable Chrome instances (aka windows). An instance is considered
retrievable if it has tab state data on disk irrespective of whether that
data is currently assigned to a running ChromeTabbedActivity. These
instances may be retrieved from Chrome's in-app window manager from Android
Recents if they are associated with a live ChromeTabbedActivity or Android
Task. Recorded on every ChromeTabbedActivity start-up. Applicable to Android
S+ only.
</summary>
</histogram>
<histogram name="Android.MultiWindowMode.Active" enum="BooleanEnabled"
expires_after="never">
<!-- expires-never: topline metric for monitoring multi-window mode usage on Chrome for Android. -->
<owner>twellington@chromium.org</owner>
<owner>tedchoc@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Records on every metrics upload whether the activity is running in Android N
multi-window mode or not.
</summary>
</histogram>
<histogram name="Android.NativeBackgroundTask.TaskFinished"
enum="BackgroundTaskId" expires_after="2023-06-15">
<owner>mheikal@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
Records that a specific background task has finished cleanly (i.e. no
unexpected exits because of chrome crash or OOM). This includes tasks that
have been stopped due to timeout.
</summary>
</histogram>
<histogram name="Android.NativeBackgroundTask.TaskFinished.FullBrowser"
enum="BackgroundTaskId" expires_after="2021-10-17">
<owner>mheikal@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<summary>
Records that a specific native background task started in Full Browser Mode
has finished cleanly. See Android.NativeBackgroundTask.TaskFinished for more
details.
</summary>
</histogram>
<histogram name="Android.NativeBackgroundTask.TaskFinished.ReducedMode"
enum="BackgroundTaskId" expires_after="2021-10-17">
<owner>mheikal@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<summary>
Records that a specific native background task started in Reduced Mode has
finished cleanly. It is possible that Full Browser has launched while the
task was running. See Android.NativeBackgroundTask.TaskFinished for more
details.
</summary>
</histogram>
<histogram name="Android.NativeBackgroundTask.TaskStarted"
enum="BackgroundTaskId" expires_after="2023-06-15">
<owner>mheikal@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
Records that a specific native background task has been started. This does
not consider tasks that are marked as DONE or RESCHEDULED before a call to
start native is made (regardless of whether native is already loaded).
</summary>
</histogram>
<histogram name="Android.NativeBackgroundTask.TaskStarted.FullBrowser"
enum="BackgroundTaskId" expires_after="2021-10-17">
<owner>mheikal@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<summary>
Records that a specific native background task has been started in Full
Browser Mode. See Android.NativeBackgroundTask.TaskStarted for more details.
</summary>
</histogram>
<histogram name="Android.NativeBackgroundTask.TaskStarted.ReducedMode"
enum="BackgroundTaskId" expires_after="2021-10-17">
<owner>mheikal@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<summary>
Records that a specific native background task has been started in Reduced
Mode. See Android.NativeBackgroundTask.TaskStarted for more details.
</summary>
</histogram>
<histogram name="Android.NativeStartupBridge.LoadFullBrowser"
enum="BooleanRequested" expires_after="2021-09-12">
<owner>mheikal@chromium.org</owner>
<owner>hnakashima@chromium.org</owner>
<owner>hanxi@chromium.org</owner>
<summary>
The number of times full-browser mode is requested to be loaded from native
code (running in reduced mode).
</summary>
</histogram>
<histogram name="Android.NTP.Impression" enum="NTPImpressionType"
expires_after="2022-02-20">
<owner>finkm@chromium.org</owner>
<summary>
Counts impressions of the NTP on Android. It also counts potential
impressions. A potential impression is a place where it would make sense to
open the NTP instead of the current view. E.g. the no-tab view is counted as
a potential impression since this view could be replaced with the NTP. For
better comparison regular impressions are also counted. The no-tab view
counting happens right after the user closed the last tab and the regular
impression counting happens at construction time of the NTP (=whenever a new
tab is opened).
</summary>
</histogram>
<histogram name="Android.OfflineItems.StateAtCancel{OfflineItemsSource}"
enum="OfflineItemsStateAtCancel" expires_after="M81">
<owner>chili@chromium.org</owner>
<summary>
State of a download or offline page request at user-initiated cancel.
{OfflineItemsSource}
</summary>
<token key="OfflineItemsSource">
<variant name="">
<obsolete>
Base histogram. Use suffixes of this histogram instead.
</obsolete>
</variant>
<variant name=".Downloads" summary="Downloads"/>
<variant name=".OfflinePages" summary="Offline pages"/>
</token>
</histogram>
<histogram name="Android.Omnibox.InvalidMatch" enum="MatchResult"
expires_after="2022-01-09">
<owner>ender@chromium.org</owner>
<owner>tedchoc@chromium.org</owner>
<owner>mpearson@chromium.org</owner>
<owner>jdonnelly@chromium.org</owner>
<summary>
Recorded every time AutocompleteController.java interacts with
autocomplete_controller_android.cc. Indicates how often matches referenced
by Java are different from the matches referenced by C++ at any position.
Note: Chrome M91 and before only increased this histogram for specific Match
objects that the user interacted with. As of M92, this histogram is
increased for every case where at least one Match referenced by Java was
different from its corresponding C++ match at the same exact position.
</summary>
</histogram>
<histogram name="Android.Omnibox.RefineActionUsage" enum="RefineActionUsage"
expires_after="2022-08-01">
<owner>ender@chromium.org</owner>
<owner>jdonnelly@chromium.org</owner>
<summary>
Records interactions with the Search Refine button, differentiating by
context (zero-prefix vs non-zero-prefix), including the cases where the User
did not interact with the Refine button placed beside the Search suggestion
at all.
Recorded once per interaction with the Omnibox and Sugestions, when the
Omnibox loses focus. This includes cases where the User chooses to navigate
somewhere (both by using a suggestion or pressing Go button on keyboard), or
abandons the Omnibox.
</summary>
</histogram>
<histogram name="Android.Omnibox.SuggestionList.LayoutTime"
units="microseconds" expires_after="2022-01-23">
<owner>ender@chromium.org</owner>
<owner>mpearson@chromium.org</owner>
<owner>jdonnelly@chromium.org</owner>
<summary>
Records time spent on positioning all suggestions on screen. This histogram
is recorded every time a new suggestion list is received.
Values recorded here should generally aim to be small, likely below 2ms
range. Higher values are an indicator of a performance problem.
Layout operation should take place just once when suggestion view is shown
for the first time.
This metric is reported for all users and uses 100microsecond granularity.
When comparing Durations measured here, also compare Total Counts for a
correct indication of how frequently views are laid out and how the overall
time spent performing layout operation changed.
This histogram is related to Android.Omnibox.SuggestionView.Reused,
Android.Omnibox.SuggestionList.MeasureTime,
Android.Omnibox.SuggestionView.CreateTime.
</summary>
</histogram>
<histogram name="Android.Omnibox.SuggestionList.MeasureTime"
units="microseconds" expires_after="2022-01-23">
<owner>ender@chromium.org</owner>
<owner>mpearson@chromium.org</owner>
<owner>jdonnelly@chromium.org</owner>
<summary>
Records time spent on measuring all suggestions ahead of positioning them on
screen. This histogram is recorded every time a new suggestion list is
received.
Values recorded here should generally aim to be small, likely below 2ms
range. Higher values are an indicator of a performance problem.
Measure operation should take place just once when suggestion view is shown
for the first time.
This metric is reported for all users and uses 100microsecond granularity.
When comparing Durations measured here, also compare Total Counts for a
correct indication of how frequently views are measured and how the overall
time spent measuring views changed.
This histogram is related to Android.Omnibox.SuggestionView.Reused,
Android.Omnibox.SuggestionList.LayoutTime,
Android.Omnibox.SuggestionView.CreateTime.
</summary>
</histogram>
<histogram name="Android.Omnibox.SuggestionView.CreateTime"
units="microseconds" expires_after="2021-12-05">
<owner>ender@chromium.org</owner>
<owner>mpearson@chromium.org</owner>
<owner>jdonnelly@chromium.org</owner>
<summary>
Records time spent creating a single suggestion.
Values recorded here should generally aim to be small, below 1ms range.
Higher values may be an indicator of a performance problem.
This metric is reported for all users and uses 100microsecond granularity.
When comparing Durations measured here, also compare Total Counts for a
correct indication of how frequently views are created and how the overall
time spent creating views changed.
This histogram is related to Android.Omnibox.SuggestionList.LayoutTime,
Android.Omnibox.SuggestionList.MeasureTime,
Android.Omnibox.SuggestionView.Reused.
</summary>
</histogram>
<histogram name="Android.Omnibox.SuggestionView.Reused" enum="BooleanReused"
expires_after="2021-12-05">
<owner>ender@chromium.org</owner>
<owner>mpearson@chromium.org</owner>
<owner>jdonnelly@chromium.org</owner>
<summary>
Records number of times a suggestion was successfully reused.
Values recorded here tell how efficiently View reuse algorithms operate and
how frequently these algorithms have managed to prevent unnecessary view
creation. Higher Reuse counts indicate better performance.
When analysing this metric, consider checking also the Total Counts of
Android.Omnibox.SuggestionView.CreateTime metric for a better information
regarding how view creations and re-uses have changed:
* If this metric increased while the Total Count of the CreateTime
decreased, the change has positive effect.
* If this metric increased (or decreased) and there is a similar change in
Total Counts of CreateTime, then the effect is neutral.
* If this metric decreased, while the Total Count increased, then the change
has a negative effect (fewer reuses, more time spent creating views)
This histogram is related to Android.Omnibox.SuggestionList.LayoutTime,
Android.Omnibox.SuggestionList.MeasureTime,
Android.Omnibox.SuggestionView.CreateTime.
</summary>
</histogram>
<histogram name="Android.Omnibox.UsedSuggestionFromCache" enum="Boolean"
expires_after="2021-10-04">
<owner>ender@chromium.org</owner>
<owner>jdonnelly@chromium.org</owner>
<owner>mpearson@chromium.org</owner>
<summary>
Records whether users interacted with suggestion originating from Java
cache.
Android presents the Cached suggestions for a brief time before the Native
libraries become available, replacing these with a fresh content as soon as
Autocomplete subsystem serves them. This histogram records all the events
where the cached suggestions were shown for an extended period of time -
long enough for the User to identify and interact with a suggestion of their
choice.
Recorded every time the User initiates navigation using the Omnibox or the
Suggestions list, regardless of context.
</summary>
</histogram>
<histogram name="Android.OmniboxFocusReason" enum="OmniboxFocusReason"
expires_after="2022-01-30">
<owner>mdjones@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<owner>amaralp@chromium.org</owner>
<owner>mpearson@chromium.org</owner>
<owner>jdonnelly@chromium.org</owner>
<summary>Records how the omnibox was focused.</summary>
</histogram>
<histogram name="Android.OpenHistoryFromMenu.PerProfileType"
enum="BrowserProfileType" expires_after="2022-02-02">
<owner>sideyilmaz@chromium.org</owner>
<owner>chrome-incognito@google.com</owner>
<summary>
Records the clicks on History menu item separately for each profile type in
Android.
</summary>
</histogram>
<histogram name="Android.PackageStats.CacheSize" units="MB"
expires_after="2021-12-26">
<owner>nyquist@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
Records the size of the user's cache at startup on Android O and above.
</summary>
</histogram>
<histogram name="Android.PackageStats.CodeSize" units="MB"
expires_after="2021-12-26">
<owner>nyquist@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
At startup, records the space on disk taken by Chrome application including
APK resources, compiled libraries, and extracted native code. Only recorded
for Android O and above.
</summary>
</histogram>
<histogram name="Android.PackageStats.DataSize" units="MB"
expires_after="2021-12-26">
<owner>nyquist@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
Records the size of the user's data directory at startup on Android O and
above. Does not include cache size.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.BitmapScalerTask" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time the BitmapScaler spent scaling a bitmap.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.CacheHits" units="Hits"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the total number of images served from the high-res cache during
the lifetime of the dialog.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.DecodeRequests" units="Hits"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the total number of images sent for decoding during the lifetime of
the dialog.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.DecoderHostFailureOutOfMemory" units="%"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
The percentage of out-of-memory decoding failures, per batch of photos (not
videos) decoded. Intended to help identify if there are devices where
decoding fails 100% of the time. Be wary at looking at other numbers in the
histogram, as a value emitted at, say, 50% may represent one failure in a
two-item decoding or 50 failures in a hundred-item decoding. These are
qualitatively different experiences for a user.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.DecoderHostVideoFileError" units="%"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
The percentage of file error decoding failures, per batch of videos (not
photos) decoded. Intended to help identify if there are devices where
decoding fails 100% of the time. Be wary at looking at other numbers in the
histogram, as a value emitted at, say, 50% may represent one failure in a
two-item decoding or 50 failures in a hundred-item decoding. These are
qualitatively different experiences for a user.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.DecoderHostVideoIoError" units="%"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
The percentage of IO error decoding failures, per batch of videos (not
photos) decoded. Intended to help identify if there are devices where
decoding fails 100% of the time. Be wary at looking at other numbers in the
histogram, as a value emitted at, say, 50% may represent one failure in a
two-item decoding or 50 failures in a hundred-item decoding. These are
qualitatively different experiences for a user.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.DecoderHostVideoRuntimeError" units="%"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
The percentage of runtime error decoding failures, per batch of videos (not
photos) decoded. Intended to help identify if there are devices where
decoding fails 100% of the time. Be wary at looking at other numbers in the
histogram, as a value emitted at, say, 50% may represent one failure in a
two-item decoding or 50 failures in a hundred-item decoding. These are
qualitatively different experiences for a user.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.DecoderHostVideoUnknownError" units="%"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
The percentage of unknown decoding error failures, per batch of videos (not
photos) decoded. Intended to help identify if there are devices where
decoding fails 100% of the time. Be wary at looking at other numbers in the
histogram, as a value emitted at, say, 50% may represent one failure in a
two-item decoding or 50 failures in a hundred-item decoding. These are
qualitatively different experiences for a user.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.DialogAction"
enum="PhotoPickerDialogAction" expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records which action the user takes in the PhotoPickerDialog.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.EnumeratedFiles" units="Files"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the total number of files returned from the enumeration operation.
Measured once at the end of the enumeration operation.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.EnumeratedRate"
units="Files per 10th of a second" expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the enumeration rate (files per tenths of a second). Measured once
at the end of the enumeration operation.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.EnumerationTime" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time the BitmapScaler spent enumerating files on
disk. Measured once at the end of the enumeration operation.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.ExifOrientation" enum="ExifOrientation"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records whether the EXIF orientation directive is present and what it is set
to. Collected once per decoded image, but only on Android N and above (and
when no IO error occurs).
</summary>
</histogram>
<histogram name="Android.PhotoPicker.ImageByteCount" units="KB"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the byte count of a decoded image. Only recorded on successful
decodes.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.ImageDecodeTime" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time it takes the decoder to decode one image. Only
recorded on successful decodes.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.RequestProcessTime" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time it takes to process one image decode request
(not video) end to end (RPC and actual decoding of the bits by utility
process). Recorded whether or not the RPC/decode request was successful.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.RequestProcessTimeAnimation" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time it takes to decode all the frames needed to show
the animation -- end to end (RPC and actual decoding of the bits by utility
process). Recorded whether or not the RPC/decode request was successful.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.RequestProcessTimeThumbnail" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time it takes to process one video frame request end
to end (RPC and actual decoding of the bits by utility process). Recorded
whether or not the RPC/decode request was successful.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.UpscaleLowResBitmap" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time it takes to upscale a bitmap from the low-res
cache. Recorded only when there a cache miss from the high-res bitmap but a
cache hit from the low-res (placeholder) bitmap.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.VideoByteCount" units="KB"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the byte count of the first video thumbnail. Only recorded on
successful decodes.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.VideoDecodeTimeAnimation" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time it takes the decoder to decode all the frames
needed to display an animated thumbnail. Only recorded on successful
decodes.
</summary>
</histogram>
<histogram name="Android.PhotoPicker.VideoDecodeTimeThumbnail" units="ms"
expires_after="2022-06-01">
<owner>finnur@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>
Measures the amount of time it takes the decoder to decode the first frame
of a video. Only recorded on successful decodes.
</summary>
</histogram>
<histogram name="Android.PlayServices.Installed" enum="BooleanInstalled"
expires_after="2022-02-06">
<owner>twellington@chromium.org</owner>
<owner>tedchoc@chromium.org</owner>
<summary>
Whether Google Play Services is installed on the device. Recorded during
deferred startup.
</summary>
</histogram>
<histogram name="Android.PlayServices.Version" units="versioncode"
expires_after="2022-02-06">
<owner>twellington@chromium.org</owner>
<owner>tedchoc@chromium.org</owner>
<summary>
The version code for Google Play Services if it is installed on the device,
or 0 if it is not. Recorded during deferred startup.
</summary>
</histogram>
<histogram name="Android.PrepareMenu.OpenWebApkVisibilityCheck" units="ms"
expires_after="2022-02-01">
<owner>hartmanng@chromium.org</owner>
<owner>
src/chrome/android/java/src/org/chromium/chrome/browser/webapps/OWNERS
</owner>
<summary>
Measures the amount of time spent querying for whether a WebAPK is already
installed.
</summary>
</histogram>
<histogram name="Android.RequestDesktopSite.TabletEligible" enum="Boolean"
expires_after="M96">
<owner>gangwu@chromium.org</owner>
<owner>fgorski@chromium.org</owner>
<summary>
Records if Chrome width is eligible for requesting desktop sites. Recorded
only when navigating to google or google search. This is recorded when
chrome adds X-Eligible-Tablet to the http header per request.
</summary>
</histogram>
<histogram name="Android.RequestDesktopSite.UseDesktopUserAgent" enum="Boolean"
expires_after="2022-02-06">
<owner>gangwu@chromium.org</owner>
<owner>fgorski@chromium.org</owner>
<summary>
Records if Chrome uses the desktop site user agent to request websites. This
is recorded when each tab loads a new url or reloads a url.
</summary>
</histogram>
<histogram name="Android.RequestDesktopSite.UserSwitchToDesktop" enum="Boolean"
expires_after="2022-02-06">
<owner>gangwu@chromium.org</owner>
<owner>fgorski@chromium.org</owner>
<summary>
Records if a user switched to request desktop site from the app menu. This
is recorded when a user manually switches sites between the desktop/mobile.
</summary>
</histogram>
<histogram name="Android.RestoreResult" enum="AndroidRestoreResult"
expires_after="M81">
<owner>aberent@chromium.org</owner>
<summary>
Whether Chrome tried to restore its settings from a previous device or
installation, and what happened when it did. Only recorded on first run.
</summary>
</histogram>
<histogram name="Android.Rotation.BeginToRendererFrameActivation" units="ms"
expires_after="2022-02-13">
<owner>jonross@chromium.org</owner>
<owner>sadrul@chromium.org</owner>
<summary>
Measures the amount of time from when Android begins notifying the Browser
process of a rotation, to when the Renderer successfully submits and
activates a frame in the new orientation.
</summary>
</histogram>
<histogram name="Android.SearchEngineChoice.ChosenSearchEngine"
enum="OmniboxSearchEngineType" expires_after="2022-06-01">
<owner>fgorski@chromium.org</owner>
<owner>wylieb@chromium.org</owner>
<summary>
The type of the search engine chosen by the user in Search Engine Choice
flow.
</summary>
</histogram>
<histogram name="Android.SearchEngineChoice.Events"
enum="AndroidSearchEngineChoiceEvents" expires_after="2022-06-01">
<owner>wylieb@chromium.org</owner>
<owner>fgorski@chromium.org</owner>
<summary>
Counts occurences of various events related to Search Engine Choice feature.
</summary>
</histogram>
<histogram name="Android.SearchEngineChoice.EventsV2"
enum="AndroidSearchEngineChoiceEventsV2" expires_after="2022-06-01">
<owner>wylieb@chromium.org</owner>
<owner>pavely@chromium.org</owner>
<owner>fgorski@chromium.org</owner>
<summary>
Counts occurences of various events related to Search Engine Choice V2
feature.
</summary>
</histogram>
<histogram name="Android.SearchEngineChoice.SearchEngineBeforeChoicePrompt"
enum="OmniboxSearchEngineType" expires_after="2022-06-01">
<owner>wylieb@chromium.org</owner>
<owner>fgorski@chromium.org</owner>
<summary>
The type of the search engine used before Search Engine Choice flow was
presented.
</summary>
</histogram>
<histogram name="Android.SeccompStatus.PhotoPickerSandbox"
enum="AndroidSeccompSandboxStatus" expires_after="M99">
<owner>peter@chromium.org</owner>
<owner>rsesek@chromium.org</owner>
<summary>
Reports the status of the seccomp-bpf sandbox in photo picker decoding
processes. Anything other than &quot;Sandbox Engaged&quot; indicates the
sandbox is not turned on. See https://crbug.com/477049.
</summary>
</histogram>
<histogram name="Android.SeccompStatus.RendererSandbox"
enum="AndroidSeccompSandboxStatus" expires_after="2021-12-05">
<owner>rsesek@chromium.org</owner>
<summary>
Reports the status of the seccomp-bpf sandbox in renderer processes.
Anything other than &quot;Sandbox Engaged&quot; indicates the sandbox is not
turned on. See https://crbug.com/477049.
</summary>
</histogram>
<histogram name="Android.SeccompStatus.Syscall" enum="AndroidSeccompStatus"
expires_after="M99">
<owner>rsesek@chromium.org</owner>
<summary>
Reports the level of kernel support for the seccomp-bpf sandbox using the
seccomp system call.
</summary>
</histogram>
<histogram name="Android.SelectFileDialogContentSelected"
units="SelectFileDialogContent" expires_after="2022-02-06">
<owner>finnur@chromium.org</owner>
<owner>peter@chromium.org</owner>
<summary>
Records the types of content selected for upload, focusing mostly on image
and video types and how they were determined (asking ContentResolver for the
MIME type or going by extension). Recorded when user uploads files to a
website (once per item uploaded).
</summary>
</histogram>
<histogram name="Android.SelectFileDialogImgCount" units="images"
expires_after="2022-02-06">
<owner>finnur@chromium.org</owner>
<owner>peter@chromium.org</owner>
<summary>
Records the number of images selected in either the new Photo Picker or the
standard Android file picker. Note: Only recorded in situations determined
to warrant the new Photo Picker (not, for example, if mixed content, like
images and text files, was requested).
</summary>
</histogram>
<histogram name="Android.SelectFileDialogScope" enum="SelectFileDialogScope"
expires_after="M96">
<owner>peter@chromium.org</owner>
<owner>finnur@chromium.org</owner>
<summary>
Records the scope of accepted content for a select file dialog when shown by
a Web developer.
</summary>
</histogram>
<histogram name="Android.ShouldDestroyIncognitoProfileOnStartup"
units="Boolean" expires_after="2021-10-10">
<obsolete>
Removed as of 05/2021.
</obsolete>
<owner>rhalavati@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
Records the number of times the call to the function
|IncognitoUtils.shouldDestroyIncognitoProfileOnStartup| returns true or
false.
</summary>
</histogram>
<histogram name="Android.StrictMode.OverrideUrlLoadingTime" units="ms"
expires_after="2022-02-06">
<owner>yfriedman@chromium.org</owner>
<owner>wnwen@chromium.org</owner>
<summary>
Measures the amount of time due to a StrictMode violation from calling out
to Android activity manager.
</summary>
</histogram>
<histogram
name="Android.StrictMode.TabPersistentStore{AndroidTabPersistentStoreTime}"
units="ms" expires_after="2021-10-04">
<obsolete>
No longer used. Removed as of 09/2021.
</obsolete>
<owner>wnwen@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
Measures time spent during StrictMode-whitelisted code in
TabPersistentStore. {AndroidTabPersistentStoreTime}
</summary>
<token key="AndroidTabPersistentStoreTime">
<variant name=""/>
<variant name=".CleanupAllEncryptedTime" summary=""/>
<variant name=".LoadStateInternalPrefetchTime" summary=""/>
<variant name=".LoadStateInternalTime" summary=""/>
<variant name=".LoadStateTime" summary=""/>
<variant name=".MergeStateInternalFetchTime" summary=""/>
<variant name=".MergeStateInternalTime" summary=""/>
<variant name=".ReadMergedStateTime" summary=""/>
<variant name=".ReadSavedStateTime" summary=""/>
<variant name=".RestoreTabPrefetchTime" summary=""/>
<variant name=".RestoreTabTime" summary=""/>
<variant name=".SaveListTime" summary=""/>
<variant name=".SaveStateTime" summary=""/>
<variant name=".SaveTabsTime" summary=""/>
</token>
</histogram>
<histogram name="Android.StrictMode.ThumbnailCacheDir" units="ms"
expires_after="M85">
<owner>wnwen@chromium.org</owner>
<owner>yfriedman@chromium.org</owner>
<summary>
Measures the amount of time due to a StrictMode violation from fetching for
the thumbnail cache directory.
</summary>
</histogram>
<histogram name="Android.Survey.DownloadAttemptsBeforeAccepted" units="units"
expires_after="2022-06-01">
<owner>skym@chromium.org</owner>
<owner>wenyufu@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
The number of survey download request attempts that have been made before
the survey is accepted. Note:
1) The download attempt might not result in a survey download due to
different reasons (e.g. download request failed or network failure). 2)
Chrome may have also successfully downloaded the survey several times in
previous sessions, but the surveys were not able to be shown for min amount
of times. In such scenarios, the total number of attempts across all
sessions will be recorded. 3) If the number of allowed download attempts has
been saturated before the survey is accepted, nothing will be recorded.
Recorded when a survey prompt is accepted. Android Only.
</summary>
</histogram>
<histogram name="Android.Survey.DownloadRequested" enum="BooleanRequested"
expires_after="2021-06-01">
<obsolete>
Deprecated as of 05/2021. Replaced with Android.Survey.DownloadRequested2
</obsolete>
<owner>twellington@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Recorded when a survey download is requested. If the client already has
successfully downloaded a survey, 'not requested' is recorded.
</summary>
</histogram>
<histogram name="Android.Survey.DownloadRequested2" enum="BooleanRequested"
expires_after="2022-06-01">
<owner>twellington@chromium.org</owner>
<owner>wenyufu@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Recorded when a survey download is requested. If the download has been
attemped, but the download request is not sent (e.g. user is not signed-in),
'not requested' will be recorded.
</summary>
</histogram>
<histogram name="Android.Survey.DownloadResponseCode"
enum="SurveyDownloadResponseCodes" expires_after="2021-06-01">
<obsolete>
Deprecated as of 05/2021 with the old library. Replaced by
Android.Survey.DownloadResponseCode2.
</obsolete>
<owner>twellington@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>The response code of the completed survey download request.</summary>
</histogram>
<histogram name="Android.Survey.DownloadResponseCode2"
enum="SurveyDownloadResponseCodes2" expires_after="2022-06-01">
<owner>skym@chromium.org</owner>
<owner>wenyufu@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
The result of the completed survey download request. A survey download is
initiated on ChromeTabbedActivity cold start iff the user passes a series of
eligibility checks. Recorded when a valid survey response is received.
Android only.
</summary>
</histogram>
<histogram name="Android.Survey.InfoBarClosingState"
enum="InfoBarClosingStates" expires_after="2022-06-01">
<owner>twellington@chromium.org</owner>
<owner>wenyufu@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
If the infobar was visible when it was closed and if it was closed directly
or not.
</summary>
</histogram>
<histogram name="Android.Survey.ShowSurvey" enum="BooleanSuccess"
expires_after="2022-06-01">
<owner>twellington@chromium.org</owner>
<owner>wenyufu@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Whether or not the survey was successfully shown after its download.
</summary>
</histogram>
<histogram name="Android.Survey.ShowSurveyStatus"
enum="SurveyPresentationStatusCode" expires_after="2022-06-01">
<owner>aishwaryarj@google.com</owner>
<owner>twellington@chromium.org</owner>
<owner>wenyufu@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
The result of the request to show the survey after it has been downloaded.
This request is initiated when the user accepts to take the survey on the
survey prompt. This histogram is agnostic to the content of the survey,
which is configured server side, and will be recorded for all surveys shown
in Chrome. Android only.
</summary>
</histogram>
<histogram name="Android.Survey.SurveyCompleted" enum="BooleanCompleted"
expires_after="2022-06-01">
<owner>skym@chromium.org</owner>
<owner>wenyufu@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
Whether a user completed the survey after it was presented. This histogram
is agnostic to the content of the survey, which is configured server side,
and will be recorded for all surveys shown in Chrome. Android only.
</summary>
</histogram>
<histogram name="Android.Survey.SurveyFilteringResults"
enum="SurveyFilteringResult" expires_after="2022-06-01">
<owner>twellington@chromium.org</owner>
<owner>wenyufu@chromium.org</owner>
<owner>clank-app-team@google.com</owner>
<summary>
The result of the survey filtering process. Each enum represents a different
filter that caught the user. This is recorded on cold starts when we check
if a user qualifies for a survey.
</summary>
</histogram>
<histogram name="Android.SysUtilsLowEndMatches" enum="BooleanEqual"
expires_after="2020-08-30">
<owner>ssid@chromium.org</owner>
<summary>
Measures whether Chrome low-end detection logic based on RAM size matches
the Android system utility value for isLowRamDevice(). This is recorded once
per browser start and may be recorded in the renderer if isLowEndDevice()
bit is checked.
</summary>
</histogram>
<histogram name="Android.TabPersistentStore.MetadataFileSize" units="units"
expires_after="M85">
<owner>wnwen@chromium.org</owner>
<owner>twellington@chromium.org</owner>
<summary>The number of bytes written for the tab metadata file.</summary>
</histogram>
<histogram name="Android.ThemeColor" enum="Android.ThemeColor"
expires_after="2021-12-12">
<owner>sinansahin@google.com</owner>
<owner>twellington@chromium.org</owner>
<summary>
Records whether a page defined theme color is available and applied to top
UI. Recorded in didFirstVisuallyNonEmptyPaint while a web page is being
loaded.
</summary>
</histogram>
<histogram name="Android.ThumbnailDiskStorage.CachedBitmap.Found"
enum="BooleanFound" expires_after="2020-01-30">
<owner>shaktisahu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records the status of a thumbnail query from the thumbnail disk storage.
</summary>
</histogram>
<histogram name="Android.ThumbnailDiskStorage.Size" units="KB"
expires_after="2020-01-30">
<owner>shaktisahu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Measures the size of the thumbnail disk storage used. Recorded during
initialization.
</summary>
</histogram>
<histogram
name="Android.ThumbnailProvider.BitmapCache.Size{ThumbnailProvider_ClientType}"
units="KB" expires_after="2021-01-30">
<!-- Name completed by histogram_suffixes
name="ThumbnailProvider.ClientType" -->
<owner>shaktisahu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Measures the size of the bitmap cache used. Recorded whenever a bitmap is
added to the cache. {ThumbnailProvider_ClientType}
</summary>
<token key="ThumbnailProvider_ClientType"
variants="ThumbnailProvider_ClientType">
<variant name="">
<obsolete>
Base histogram. Use suffixes of this histogram instead.
</obsolete>
</variant>
</token>
</histogram>
<histogram
name="Android.ThumbnailProvider.CachedBitmap.Found{ThumbnailProvider_ClientType}"
enum="BooleanFound" expires_after="2021-01-30">
<!-- Name completed by histogram_suffixes
name="ThumbnailProvider.ClientType" -->
<owner>shaktisahu@chromium.org</owner>
<owner>clank-downloads@google.com</owner>
<summary>
Records the status of a thumbnail query from the thumbnail provider
in-memory cache. {ThumbnailProvider_ClientType}
</summary>
<token key="ThumbnailProvider_ClientType"
variants="ThumbnailProvider_ClientType">
<variant name="">
<obsolete>
Base histogram. Use suffixes of this histogram instead.
</obsolete>
</variant>
</token>
</histogram>
<histogram name="Android.View.onDraw.30Seconds" units="count"
expires_after="2022-08-31">
<owner>nuskos@chromium.org</owner>
<owner>chrometto-team@google.com</owner>
<summary>
Keeps a counter of each onDraw invoked on the root view and emits the count
once every 30 seconds. Thus this is the amount of times android attempted to
draw/update a java view in the last 30 seconds.
NOTE: 30 second intervals with 0 draws are not reported.
</summary>
</histogram>
<histogram name="Android.WebView.ActualUiThread"
enum="AndroidWebViewActualUiThread" expires_after="2021-03-31">
<obsolete>
Removed Feb 2021; they virtually always use the main thread.
</obsolete>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Recorded once per startup for apps targeting releases before JB MR2 if they
create their first WebView off the main thread. This records which thread
they actually ended up using as their UI thread.
</summary>
</histogram>
<histogram name="Android.WebView.AndroidProtocolHandler.ResourceGetIdentifier"
enum="BooleanSuccess" expires_after="2021-01-30">
<obsolete>
Removed Jan 2021 because it doesn't cover the cases, replaced with
ResourceGetIdentifier2.
</obsolete>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Track if looking up Android app resource id using
android.content.res.Resources#getIdentifier succeeds in
AndroidProtocolHandler or if it falls back to reflection look up.
</summary>
</histogram>
<histogram name="Android.WebView.AndroidProtocolHandler.ResourceGetIdentifier2"
enum="AndroidWebViewAndroidProtocolHandlerResources"
expires_after="2021-05-30">
<obsolete>
Removed May 2021 because it's no longer needed, we found that
AndroidProtocolHandler still needs to fail back to reflection to find
resource ids in 1.7% of cases.
</obsolete>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Track if looking up Android app resource id using
android.content.res.Resources#getIdentifier succeeds in
AndroidProtocolHandler in all cases or if should still fall back to
reflection look up.
</summary>
</histogram>
<histogram name="Android.WebView.AndroidX.ApiCall" enum="AndroidXWebkitApiCall"
expires_after="2022-01-31">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records calls to WebView APIs from AndroidX. Some AndroidX-originating calls
will plumb through the framework, for example, if methods that are available
in the framework are called from the equivalent method in AndroidX.
</summary>
</histogram>
<histogram name="Android.WebView.AttachedToWindowIn30s" enum="Boolean"
expires_after="2021-06-09">
<obsolete>
Removed in June 2021.
</obsolete>
<owner>michaelbai@chromium.org</owner>
<owner>boliu@chromium.org</owner>
<summary>
Records if WebView was attached to a Android window in 30s since WebView was
created. Nothing will be recorded if WebView has already been destroyed.
</summary>
</histogram>
<histogram name="Android.WebView.AttachedToWindowIn3m" enum="Boolean"
expires_after="2021-06-09">
<obsolete>
Removed in June 2021.
</obsolete>
<owner>michaelbai@chromium.org</owner>
<owner>boliu@chromium.org</owner>
<summary>
Records if WebView was attached to a Android window in 3m since WebView was
created. Nothing will be recorded if WebView has already been destroyed.
</summary>
</histogram>
<histogram name="Android.WebView.AttachedToWindowIn5s" enum="Boolean"
expires_after="2021-06-09">
<obsolete>
Removed in June 2021.
</obsolete>
<owner>michaelbai@chromium.org</owner>
<owner>boliu@chromium.org</owner>
<summary>
Records if WebView was attached to a Android window in 5s since WebView was
created. Nothing will be recorded if WebView has already been destroyed.
</summary>
</histogram>
<histogram name="Android.WebView.AttachedToWindowTime" units="ms"
expires_after="2021-06-09">
<obsolete>
Removed in June 2021.
</obsolete>
<owner>michaelbai@chromium.org</owner>
<owner>boliu@chromium.org</owner>
<summary>
Records how long it took for WebView to be attached to a Android window
since WebView was created. If WebView is never attached to a window, nothing
will be recorded.
</summary>
</histogram>
<histogram name="Android.WebView.AwDebugCall" enum="AwDebugCall"
expires_after="2022-01-31">
<owner>oksamyt@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Counts the number of calls to AwDebug methods, recorded each time a method
is called.
</summary>
</histogram>
<histogram name="Android.WebView.Callback.Counts" enum="WebViewCallbackType"
expires_after="2022-05-10">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>Records the invocation count of WebView callbacks.</summary>
</histogram>
<histogram name="Android.WebView.ClearProxyOverride" units="units"
expires_after="2021-08-01">
<obsolete>
Removed in July 2021.
</obsolete>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>Records ClearProxyOverride calls.</summary>
</histogram>
<histogram name="Android.WebView.ComponentUpdater.CPSDirectorySize" units="KB"
expires_after="2021-10-08">
<owner>nator@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Size on disk taken by the ComponentsProviderService serving directory. This
is logged once per run of the update job in AwComponentUpdateService.
</summary>
</histogram>
<histogram name="Android.WebView.ComponentUpdater.CUSDirectorySize" units="KB"
expires_after="2021-10-08">
<owner>nator@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Size on disk taken by the AwComponentUpdateService directory. This is logged
once per update job in AwComponentUpdateService.
</summary>
</histogram>
<histogram name="Android.WebView.ComponentUpdater.GetFilesDuration" units="ms"
expires_after="2022-01-09">
<owner>nator@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Duration of ComponentsProviderService getFilesForComponent request. This
method retrieves FileDescriptors for an installed component. This is logged
at the end of every request the service receives.
</summary>
</histogram>
<histogram name="Android.WebView.ComponentUpdater.GetFilesResult"
enum="WebViewComponentUpdaterGetFilesResult" expires_after="2022-01-09">
<owner>nator@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Logs the result of ComponentsProviderService getFilesForComponent request.
This method retrieves FileDescriptors for an installed component. This is
logged once for every request the service receives.
</summary>
</histogram>
<histogram name="Android.WebView.ComponentUpdater.SafeModeActionExecuted"
enum="Boolean" expires_after="2022-06-30">
<owner>nator@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Whether a SafeMode action was executed by Component Updater services. This
is logged whenever a nonembedded Component Updater service checks whether
SafeMode is enabled.
</summary>
</histogram>
<histogram name="Android.WebView.ComponentUpdater.UnexpectedExit"
enum="Boolean" expires_after="2021-10-08">
<owner>nator@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Whether AwComponentUpdateService quit unexpectedly on the previous run. This
might indicate a crash occurred during the previous job. This is logged once
per run of AwComponentUpdateService.
</summary>
</histogram>
<histogram name="Android.WebView.ComponentUpdater.UpdateJobDuration" units="ms"
expires_after="2022-02-13">
<owner>nator@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Duration of AwComponentUpdateService update job. This job is responsible for
updating and installing components. This is logged once per run of the job.
</summary>
</histogram>
<histogram name="Android.WebView.ComponentUpdater.UpdateJobFilesChanged"
units="count" expires_after="2021-10-08">
<owner>nator@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
How many components were updated by AwComponentUpdateService update job.
This is logged once per run of the job, and is capped at 1000.
</summary>
</histogram>
<histogram name="Android.WebView.ConnectedToVariationService" enum="Boolean"
expires_after="M93">
<obsolete>
Removed Jun 2021 for cleanup (no longer needed): https://crbug.com/1217220
</obsolete>
<owner>hazems@chromium.org</owner>
<owner>webview-team@google.com</owner>
<summary>
Reports if an embedded WebView attempts to connect to the VariationService
during WebView startup or not. This should help to get an estimate of how
often &quot;:webview_service&quot; nonembedded process is launched during
WebView startup. There are other services that WebView connects to during
startup such as CrashReceiverService and MetricsBridgeService but
VariationService is the most dominant one. This is only recorded once during
WebView startup.
</summary>
</histogram>
<histogram name="Android.WebView.CookieManager.SameSiteAttributeValue"
enum="CookieSameSiteString" expires_after="M90">
<obsolete>
Removed Jan 2021 for cleanup (no longer needed): https://crbug.com/1165012
</obsolete>
<owner>chlily@chromium.org</owner>
<owner>torne@chromium.org</owner>
<summary>
The value of the cookie's SameSite attribute, if any. This is logged once
per creation of a cookie via the CookieManager API. These cookies are double
counted (once from CookieManager, logged in this histogram, and once from
CanonicalCookie::Create, logged in Cookie.SameSiteAttributeValue).
</summary>
</histogram>
<histogram name="Android.WebView.CookieManager.SameSiteNoneIsSecure"
enum="Boolean" expires_after="M90">
<obsolete>
Removed Jan 2021 for cleanup (no longer needed): https://crbug.com/1165012
</obsolete>
<owner>chlily@chromium.org</owner>
<owner>torne@chromium.org</owner>
<summary>
If a cookie was SameSite=None, this records whether or not it was Secure.
Logged once per attempt to set a SameSite=None cookie via CookieManager API.
These cookies are double counted (once from CookieManager, logged in this
histogram, and once from CookieMonster::SetCanonicalCookie, logged in
Cookie.SameSiteNoneIsSecure).
</summary>
</histogram>
<histogram name="Android.WebView.CustomDefaultVideoPoster" enum="Boolean"
expires_after="2021-08-01">
<obsolete>
Removed Aug 2021.
</obsolete>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records true if the embedding app's implementation of the
WebChromeClient.getDefaultVideoPoster() callback returned a custom default
poster, or false if it did not.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.ForceDarkBehavior"
enum="WebViewForceDarkBehavior" expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records WebView force dark behavior settings on each main frame navigation
entry committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.ForceDarkMode"
enum="WebViewForceDarkMode2" expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records WebView force dark mode settings on each main frame navigation entry
committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.InDarkMode" enum="Boolean"
expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records if WebView is in dark mode on each main frame navigation entry
committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.InDarkModeVsLightTheme"
enum="WebViewInDarkModeVsLightTheme" expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records if the application has light theme and if WebView is in dark mode on
each main frame navigation entry committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.InDarkModeVsNightMode"
enum="WebViewInDarkModeVsNightMode" expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records if the application is in the night mode and if WebView is in dark
mode on each main frame navigation entry committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.LightTheme" enum="LightTheme"
expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records if the application has light theme on each main frame navigation
entry committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.NightMode" enum="NightMode"
expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records application's night mode bit related to
android.content.res.Configuration.UI_MODE_NIGHT_MASK on each main frame
navigation entry committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.NightModeVsLightTheme"
enum="WebViewNightModeVsLightTheme" expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records if application is in night mode and if it has light theme on each
main frame navigation entry committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.PrimaryTextLuminanceVsLightTheme"
enum="WebViewPrimaryTextLuminanceVsLightTheme" expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records if the application has light theme and if its theme's
textColorPrimary attribute is light on each main frame navigation entry
committed.
</summary>
</histogram>
<histogram name="Android.WebView.DarkMode.PrimaryTextLuminanceVsNightMode"
enum="WebViewPrimaryTextLuminanceVsNightMode" expires_after="2022-01-24">
<owner>michaelbai@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records if the application is in night mode and if its theme's
textColorPrimary attribute is light on each main frame navigation entry
committed.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.AppLaunch" enum="Boolean"
expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the number of times the developer UI app was launched. This only
ever logs the value &quot;true&quot; because we only care about the total
count. This is logged in the developer UI app during Activity#onCreate.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.CrashList.CollectionState"
enum="AndroidWebViewCrashCollectionState" expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the state of crash collection, as seen by the developer UI. This is
recorded when launching the crash UI, but only if the UI is not already
showing an error message for another problem (ex. WebView package error).
This only logs the first state we detect: ex. if the user has enabled crash
reporting by opting in and also with the flag UI, this only logs the flag UI
case.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.CrashList.CrashInteraction"
enum="AndroidWebViewCrashInteraction" expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the user's interaction with crashes in the developer UI's crash
list. Specifically, this tracks how the user interacts with the &quot;hide
crash&quot;, &quot;upload this crash report&quot; or the &quot;file bug
report&quot; buttons and possible subsequent dialogs. Since the latter two
buttons are connected (the user must upload a crash before they can file a
bug report), we track interaction with both in the same histogram. This is
recorded for each button press in the crash list and is not recorded if the
user does not interact with any crashes.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.CrashList.NumberShown"
units="crash reports" expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the number of crashes shown in the developer UI. This is logged each
time the crash UI is launched and each time its list is refreshed. The UI
currently limits the number of crashes at 20, so clients logging the maximum
may have more logs sitting on disk.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.DeveloperModeBlockingTime" units="ms"
expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the time spent blocking WebView startup to check for developer mode
(see &quot;Android.WebView.DevUi.DeveloperModeEnabled&quot;). This is
recorded once during WebView startup, regardless of whether developer mode
is enabled.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.DeveloperModeEnabled"
enum="BooleanEnabled" expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether or not WebView is starting up in &quot;developer mode.&quot;
This is a mode where the user has enabled debugging features through the
WebView developer UI. This is recorded once during startup.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.FlagLoadingBlockingTime" units="ms"
expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the time spent blocking WebView startup to load flags from the
developer UI. This is recorded only once during WebView startup, and only if
we've already detected developer mode is enabled (see
&quot;Android.WebView.DevUi.DeveloperModeEnabled&quot;).
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.FlagsUi.ToggledFromSearch"
enum="Boolean" expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
This is recorded each time a user toggles a flag in the developer UI
(changing a flag's state), and logs whether the user found this flag with
the search bar (&quot;true&quot; means there was a non-empty search query).
This is only recorded when the user toggles an individual flag through the
Spinner dialog, not when they press the &quot;reset all flags&quot; button.
</summary>
</histogram>
<histogram
name="Android.WebView.DevUi.FragmentNavigation{Android_WebView_DevUi_NavType}"
enum="AndroidWebViewDevUiFragments" expires_after="2021-12-14">
<!-- Name completed by histogram_suffixes
name="Android.WebView.DevUi.NavType" -->
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the user's navigation to a Fragment. &quot;FromIntent&quot; tracks
navigations triggered by an Intent (ex. navigating to HomeFragment on
launch) and &quot;NavBar&quot; tracks user interaction with the bottom
navigation bar. &quot;AnyMethod&quot; should be the sum of the other two.
{Android_WebView_DevUi_NavType}
</summary>
<token key="Android_WebView_DevUi_NavType">
<variant name="">
<obsolete>
Base histogram. Use suffixes of this histogram instead.
</obsolete>
</variant>
<variant name=".AnyMethod" summary="User navigation through any means"/>
<variant name=".FromIntent"
summary="User navigation through the bottom navigation bar"/>
<variant name=".NavBar" summary="User navigation in response to an Intent"/>
</token>
</histogram>
<histogram name="Android.WebView.DevUi.MenuSelection"
enum="AndroidWebViewDevUiMenu" expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the user's selection in the developer UI overflow menu or action
bar, recorded after each selection.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.MonochromeIconStateToggled"
enum="BooleanEnabled" expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records how the developer UI launcher icon for Monochrome was toggled: was
it enabled or disabled? This can be recorded either from WebView's
non-embedded processes or Chrome's browser process whenever either changes
the icon state (nothing is logged if we don't need to change the icon
state). This is only recorded in Monochrome (Android Nougat, Oreo, and Pie),
since this logic is only relevant in that case.
</summary>
</histogram>
<histogram base="true" name="Android.WebView.DevUi.SessionDuration2" units="ms"
expires_after="2021-12-14">
<!-- Name completed by histogram_suffixes
name="AndroidWebViewFragments" -->
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the time spent using a specific tool, from creation to destruction.
</summary>
</histogram>
<histogram name="Android.WebView.DevUi.ToggledFlagCount" units="flags"
expires_after="2021-12-14">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the number of flags we will toggle for this run of WebView. This is
recorded only once during WebView startup, and only if we've already
detected developer mode is enabled (see
&quot;Android.WebView.DevUi.DeveloperModeEnabled&quot;). If developer mode
is disabled, we will not toggle any flags through this mechanism.
</summary>
</histogram>
<histogram name="Android.WebView.EverAttachedToWindow" enum="Boolean"
expires_after="2021-06-09">
<obsolete>
Removed in June 2021.
</obsolete>
<owner>michaelbai@chromium.org</owner>
<owner>boliu@chromium.org</owner>
<summary>
Records if WebView was ever attached to a window when WebView is destroyed.
If WebView is killed by platform, nothing will be recorded.
</summary>
</histogram>
<histogram name="Android.WebView.ExtraHeaders.Valid" enum="BooleanValid"
expires_after="M88">
<obsolete>
Invalid headers instead just throw an exception in M89+.
</obsolete>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Recorded when an app passes extra headers to
WebView.loadUrl(url,extra_headers). We check if the header names and values
are valid.
</summary>
</histogram>
<histogram name="Android.WebView.ExtraHeadersRedirect"
enum="WebViewExtraHeadersRedirect" expires_after="2021-02-14">
<obsolete>
Removed Nov 2020; experiment is done and the data isn't useful.
</obsolete>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the redirect type each time that a request is redirected, if that
request contains extra headers added by the
WebView.loadUrl(url,extra_headers) API.
</summary>
</histogram>
<histogram name="Android.WebView.ForceDarkBehavior"
enum="WebViewForceDarkBehavior" expires_after="2021-12-03">
<owner>peter@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records strategy to be used by force dark in WebView when
setForceDarkBehavior API is called by the embedding application.
</summary>
</histogram>
<histogram name="Android.WebView.ForceDarkMode" enum="WebViewForceDarkMode"
expires_after="2021-12-03">
<owner>peter@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records WebView's force dark setting and the UI's night mode when
setForceDark API is called by the embedding application.
</summary>
</histogram>
<histogram name="Android.WebView.Gfx.HardwareDrawType"
enum="WebViewDrawAndSubmissionType" expires_after="2022-01-15">
<owner>vasilyt@chromium.org</owner>
<owner>boliu@chromium.org</owner>
<summary>
Tracks invalidate and frame submission status for WebView hardware draw.
Result is enum that represent three flags: did we called invalidate this
frame, did renderer submitted compositor frame and whether DrawParams from
Android HWUI changed. This is logged once per WebView draw functor call.
</summary>
</histogram>
<histogram name="Android.WebView.LoadDataWithBaseUrl.BaseUrl"
enum="WebViewUrlScheme" expires_after="2021-05-05">
<obsolete>
Removed Mar 2021; we're not planning any short-term work in this area.
</obsolete>
<owner>ntfschr@chromium.org</owner>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the scheme for the baseUrl parameter to loadDataWithBaseURL. This
also records if this value is &quot;empty&quot;, as determined by
TextUtils.isEmpty().
</summary>
</histogram>
<histogram name="Android.WebView.LoadDataWithBaseUrl.HistoryUrl"
enum="HistoryUrlType" expires_after="M85">
<obsolete>
Removed Jan 2021 (had already expired)
</obsolete>
<owner>jamwalla@chromium.org</owner>
<summary>
Records whether the historyUrl parameter to loadDataWithBaseUrl is empty/
null, the same as the baseUrl parameter, or different from baseUrl.
</summary>
</histogram>
<histogram name="Android.WebView.LoadDataWithBaseUrl.HistoryUrl.{Timing}"
enum="URLValueForLoadDataWithBaseURL" expires_after="M95">
<owner>rakina@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether the history_url_for_data_url parameter used for a
loadDataWithBaseURL commit is empty/null, invalid, the same as the baseUrl
parameter, the same as the data: URL, or an entirely different value.
Recorded at navigation at {Timing}.
</summary>
<token key="Timing">
<variant name="DidCommitNavigation"/>
<variant name="NavigationRequestCreated"/>
</token>
</histogram>
<histogram name="Android.WebView.LoadDataWithBaseUrl.IsInMainFrame"
enum="BooleanMainFrame" expires_after="M95">
<owner>rakina@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
When the base_url_for_data_url parameter is set and the URL is a data: URL
(NavigationRequest::IsLoadDataWithBaseURL() returns true), records whether
the navigation happens on a main frame or a subframe. Recorded when the
NavigationRequest is created.
</summary>
</histogram>
<histogram name="Android.WebView.LoadDataWithBaseUrl.LoadingUrl"
enum="URLValueForLoadDataWithBaseURL" expires_after="M95">
<owner>rakina@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether the loading URL (DidCommitParams' URL) used for a
loadDataWithBaseURL commit is empty/null, invalid, the same as the baseUrl
parameter, the same as the data: URL, or an entirely different value.
Recorded at DidCommitNavigation.
</summary>
</histogram>
<histogram
name="Android.WebView.LoadDataWithBaseUrl.NextNavigationIsSameDocument"
enum="Boolean" expires_after="M95">
<owner>rakina@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether a navigation that happens on/away from a document loaded
through a loadDataWithBaseUrl navigation is same-document or not. Recorded
at DidCommitNavigation.
</summary>
</histogram>
<histogram name="Android.WebView.LoadDataWithBaseUrl.SameUrlReplacement"
enum="Boolean" expires_after="M95">
<owner>rakina@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether a loadDataWithBaseURL navigation is categorized as a
same-URL-replacement navigation or not. Recorded from
NavigationRequest::StartNavigation().
</summary>
</histogram>
<histogram name="Android.WebView.LoadUrl.UrlScheme" enum="WebViewUrlScheme"
expires_after="2022-03-29">
<owner>ntfschr@chromium.org</owner>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the scheme for the URL loaded by a browser-initiated navigation.
Specifically, this is the scheme of the URL passed to loadUrl() (and its
overloads), postUrl(), and loadData (this is implicitly &quot;data:&quot;).
also records if this value is &quot;empty&quot;, which means either null or
&quot;about:blank&quot;. This intentionally excludes loadDataWithBaseURL().
</summary>
</histogram>
<histogram name="Android.WebView.Metrics.PackagesAllowList.ParseStatus"
enum="AppPackageNameAllowlistParseStatus" expires_after="2022-07-01">
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the result of parsing the apps package names allowlist used to
populate the &quot;app_package_name&quot; field in UMA metrics logs. This is
recorded when the AwAppsPackageNamesAllowlistComponentLoaderPolicy is
successfully loaded by EmbeddedComponentLoader, i.e when ComponentLoaded is
called by the loader.
</summary>
</histogram>
<histogram name="Android.WebView.Metrics.PackagesAllowList.RecordStatus"
enum="AppPackageNameLoggingRuleStatus" expires_after="2022-07-01">
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the status of the apps package names allowlist used to populate the
&quot;app_package_name&quot; field in UMA metrics log. The status tracks if
a new version is loaded, a cached one is used or if loading the allowlist
has failed. It's recorded everytime the app package name is queried when a
new metrics log is created.
</summary>
</histogram>
<histogram
name="Android.WebView.Metrics.PackagesAllowList.ResultReceivingDelay"
units="ms" expires_after="2022-07-01">
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the time delta between creating a AwMetricsServiceClient instance
during WebView startup and the time when the app package names allowlist is
loaded and looked up. This only records when a new version of the allowlist
is loaded successfully. i.e it's not recorded if the loading the allowlist
fails or if a cached version is used.
</summary>
</histogram>
<histogram name="Android.WebView.MixedContent.Mode"
enum="WebViewMixedContentMode" expires_after="M96">
<owner>ntfschr@chromium.org</owner>
<owner>carlosil@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the mixed content mode set when an app uses the
WebSettings.setMixedContentMode API.
</summary>
</histogram>
<histogram name="Android.WebView.NonEmbeddedMetrics.HistogramRecordAge"
units="minutes" expires_after="2022-06-07">
<owner>hazems@chromium.org</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the time interval between when a histogram is recorded in a
non-embedded WebView process and when it's actually sent to the UMA API in
an embedded WebView. This is recorded during WebView startup for each
histogram retrieved and replayed successfully from WebView non-embedded
metrics service.
</summary>
</histogram>
<histogram name="Android.WebView.NonEmbeddedMetrics.NumHistograms"
units="histograms" expires_after="2022-06-07">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the number of histograms received from WebView's non-embedded
histogram service. This is recorded once during WebView startup, after
retrieving histograms from the service (if the proto can be parsed).
</summary>
</histogram>
<histogram name="Android.WebView.NonEmbeddedMetrics.ParsingLogResult"
enum="AndroidWebViewNonEmbeddedMetricsParsingLogResult"
expires_after="2022-06-07">
<owner>hazems@chromium.org</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether metrics parsing from file in non-embedded histogram service
was successful. It's recorded during service startup by adding it to records
list. It captures the most recent file parsing result for the last service
launch before the client connects to the service.
</summary>
</histogram>
<histogram name="Android.WebView.NonEmbeddedMetrics.RetrieveMetricsTaskStatus"
enum="AndroidWebViewNonEmbeddedMetricsRetrieveMetricsTaskStatus"
expires_after="2022-06-07">
<owner>hazems@chromium.org</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Recorded by the non-embedded histogram service if it's unable to return
histograms. This is always recorded when a client connects to retrieve
histograms.
</summary>
</histogram>
<histogram name="Android.WebView.NonEmbeddedMetrics.TransmissionResult"
enum="AndroidWebViewDevUiMetricsTransmission" expires_after="2022-06-07">
<owner>ntfschr@chromium.org</owner>
<owner>hazems@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether metrics transmission from the non-embedded histogram service
was successful. This is recorded once during WebView startup, after
retrieving histograms from the service.
</summary>
</histogram>
<histogram name="Android.WebView.onReceivedError.ErrorCode"
enum="WebViewClientErrorCode" expires_after="2022-05-10">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
The WebViewClient error code as returned by the onReceivedError callback
This is recorded regardless of whether the network service is enabled or
disabled.
</summary>
</histogram>
<histogram name="Android.WebView.onReceivedHttpError.StatusCode"
enum="HttpResponseCode" expires_after="2022-05-10">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
The WebViewClient http resonse status code as returned by the
onReceivedHttpError callback This is recorded regardless of whether the
network service is enabled or disabled.
</summary>
</histogram>
<histogram name="Android.WebView.OnRenderProcessGoneResult"
enum="AndroidWebViewRenderProcessGoneResult" expires_after="2022-08-03">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
This captures two pieces of information about renderer crashes: did the app
developer handle the renderer crash to recover, and if not, what type of
crash was this? This is recorded once each time the renderer process dies
unexpectedly, and is logged after we have notified the app via the
onRenderProcessGone() callback.
</summary>
</histogram>
<histogram name="Android.WebView.PageTimeSpent.{Scheme}" units="ms"
expires_after="2022-07-01">
<owner>mvanouwerkerk@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Time spent on a page with a {Scheme} scheme. This is measured from
navigation commit to the start of the next navigation.
</summary>
<token key="Scheme">
<variant name="App"/>
<variant name="Blob"/>
<variant name="Chrome"/>
<variant name="ChromeNative"/>
<variant name="Content"/>
<variant name="CustomTab"/>
<variant name="Data"/>
<variant name="Devtools"/>
<variant name="Document"/>
<variant name="File"/>
<variant name="Filesystem"/>
<variant name="Ftp"/>
<variant name="Http"/>
<variant name="Https"/>
<variant name="Inline"/>
<variant name="Intent"/>
<variant name="Jar"/>
<variant name="JavaScript"/>
<variant name="Other"/>
<variant name="Sms"/>
<variant name="Tel"/>
</token>
</histogram>
<histogram name="Android.WebView.PrefLoadTime" units="ms"
expires_after="2020-12-01">
<obsolete>
Removed in November 2020.
</obsolete>
<owner>rmcelrath@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records how long WebView blocks startup to load prefs from disk. This is
recorded once per browser process startup.
</summary>
</histogram>
<histogram name="Android.WebView.SafeMode.ActionsCount"
units="SafeMode actions" expires_after="2022-06-08">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the number of SafeMode actions WebView received from the
SafeModeService. This is only recorded once during startup if SafeMode is
enabled (see &quot;Android.WebView.SafeMode.SafeModeEnabled&quot;),
otherwise this is not recorded at all (because there were no SafeMode
actions to execute). This is recorded before executing any SafeMode actions.
</summary>
</histogram>
<histogram name="Android.WebView.SafeMode.CheckStateBlockingTime" units="ms"
expires_after="2022-06-08">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the time spent blocking WebView startup to check for SafeMode (see
&quot;Android.WebView.SafeMode.SafeModeEnabled&quot;). This is recorded once
during WebView startup, regardless of whether SafeMode is enabled.
</summary>
</histogram>
<histogram name="Android.WebView.SafeMode.ExecutionResult"
enum="AndroidWebViewSafeModeResult" expires_after="2022-06-08">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether SafeMode was able to execute all the specified SafeMode
actions or if it encountered an error. This is recorded once during WebView
startup and only if SafeMode is enabled (see
&quot;Android.WebView.SafeMode.SafeModeEnabled&quot;).
</summary>
</histogram>
<histogram name="Android.WebView.SafeMode.QueryAndExecuteBlockingTime"
units="ms" expires_after="2022-06-08">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the time spent blocking WebView startup to both retrieve the list of
SafeMode actions from the SafeModeService and to execute those actions. This
is recorded once during startup only if SafeMode is enabled (see
&quot;Android.WebView.SafeMode.SafeModeEnabled&quot;). This can be
interpreted as the additional startup cost caused by enabling SafeMode.
</summary>
</histogram>
<histogram name="Android.WebView.SafeMode.SafeModeEnabled"
enum="BooleanEnabled" expires_after="2022-06-08">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether or not WebView is starting up in SafeMode. This is a mode
where WebView takes extra steps during startup to reduce the risk of
starting in a bad state. This is recorded once during WebView startup,
regardless of whether SafeMode is enabled.
</summary>
</histogram>
<histogram name="Android.WebView.SecureCookieAction" enum="SecureCookieAction"
expires_after="2022-05-10">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the action WebView took (if any) to &quot;fix up&quot; secure
cookies for backwards compatibility.
</summary>
</histogram>
<histogram name="Android.WebView.SetProxyOverride.BypassRules"
enum="BooleanPresent" expires_after="2021-08-01">
<obsolete>
Removed in July 2021.
</obsolete>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether bypass rules were present in SetProxyOverride calls.
</summary>
</histogram>
<histogram name="Android.WebView.SetProxyOverride.ProxySchemeFilterType"
enum="AndroidWebViewProxySchemeFilterType" expires_after="2021-08-01">
<obsolete>
Removed in July 2021.
</obsolete>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the type of scheme filter in SetProxyOverride calls.
</summary>
</histogram>
<histogram name="Android.WebView.SetProxyOverride.ProxyUrlType"
enum="AndroidWebViewProxyUrlType" expires_after="2021-08-01">
<obsolete>
Removed in July 2021.
</obsolete>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>Records the type of url in SetProxyOverride calls.</summary>
</histogram>
<histogram name="Android.WebView.ShouldInterceptRequest.InterceptionType"
enum="InterceptionType" expires_after="2022-05-10">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Whether the request was intercepted by the embedder of Android WebView, and
if so which url scheme was used. Intercepted request are requests for which
the shouldInterceptRequest() callback returned a non-null response.
</summary>
</histogram>
<histogram
name="Android.WebView.ShouldInterceptRequest.NullInputStream.ResponseStatusCode"
enum="HttpResponseCode" expires_after="2020-06-14">
<obsolete>
Removed 2021-05
</obsolete>
<owner>timvolodine@chromium.org</owner>
<owner>tobiasjs@chromium.org</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the custom response status code for the intercepted requests where
input stream is null. In case status code is invalid (or has not been
specified by the app) a zero status code is recorded. This UMA is needed in
order to track specific usages of request interception where the behavior
with network service enabled is different from the old code path (for more
details see go/wv-ns-behavior-differences). This data is recorded regardless
of whether the network service is enabled or disabled.
</summary>
</histogram>
<histogram name="Android.WebView.SingleOrMultiProcess"
enum="AndroidWebViewSingleOrMultiProcess" expires_after="2022-01-22">
<owner>alexmitra@chromium.org</owner>
<owner>nator@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether WebView is being run in a single process or multi-process.
This is recorded when WebView starts.
</summary>
</histogram>
<histogram name="Android.WebView.Startup.CreationTime.Stage1.FactoryInit"
units="ms" expires_after="2022-01-30">
<owner>changwan@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
How long it takes to initialize a WebViewChromiumFactoryProvider. This is
the first major phase of the WebViewChromium construction.
</summary>
</histogram>
<histogram name="Android.WebView.Startup.CreationTime.Stage2.ProviderInit.Cold"
units="ms" expires_after="2022-01-30">
<owner>changwan@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
How long it takes to initialize a WebViewProvider, the first time that one
is initialized. WebViewProvider initialization is the second major phase of
WebViewChromium construction. The first initialization is recorded
separately because it is usually much slower than subsequent ones.
</summary>
</histogram>
<histogram name="Android.WebView.Startup.CreationTime.Stage2.ProviderInit.Warm"
units="ms" expires_after="2022-01-30">
<owner>changwan@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
How long it takes to initialize a WebViewProvider, the first time that one
is initialized. WebViewProvider initialization is the second major phase of
WebViewChromium construction. When it is not the first time, it is faster
and thus recorded separately.
</summary>
</histogram>
<histogram name="Android.WebView.Startup.CreationTime.StartChromiumLocked"
units="ms" expires_after="2022-02-26">
<owner>amalova@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>How long it takes to run startChromiumLocked.</summary>
</histogram>
<histogram name="Android.WebView.Startup.CreationTime.TotalFactoryInitTime"
units="ms" expires_after="2022-02-26">
<owner>amalova@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
The total time to initialize WebViewChromiumFactoryProvider.
This measurement is different from Stage1.FactoryInit as it takes into
accout time spent in framework.
</summary>
</histogram>
<histogram name="Android.WebView.Startup.DataDirLockAttempts" units="attempts"
expires_after="2020-12-10">
<obsolete>
Removed 2020-10
</obsolete>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
How many attempts it took to acquire the WebView data directory lock. A
value of 0 indicates that we reached the max retry count and failed to
acquire the lock successfully at all.
</summary>
</histogram>
<histogram name="Android.WebView.Startup.InitAlreadyStarted" enum="Boolean"
expires_after="2020-12-10">
<obsolete>
Removed 2020-10
</obsolete>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether we already tried to initialize WebView in the current
process previously, upon entry to the initialization function. This should
never be true under normal circumstances and may indicate an application
catching an exception thrown by initialization and discarding it.
</summary>
</histogram>
<histogram name="Android.WebView.Startup.InitType"
enum="AndroidWebViewInitType" expires_after="2021-09-21">
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records which thread WebView initialization started from. The metric is
recorded during the first startChromiumLocked call.
</summary>
</histogram>
<histogram name="Android.WebView.SupportLibrary.ClientIsCompat"
enum="WebViewClientTypeEnum" expires_after="2021-11-13">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records whether the WebViewClient provided by the app is an instance of
WebViewClientCompat (and therefore exposes AndroidX callbacks). This is
recorded each time the app sets a new WebViewClient via
WebView#setWebViewClient().
</summary>
</histogram>
<histogram name="Android.WebView.TargetSdkVersion" enum="AndroidApiLevel"
expires_after="2022-07-21">
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
The version of the target SDK of the app WebView is running in. This is
recorded once during startup.
</summary>
</histogram>
<histogram
name="Android.WebView.UniversalAccess.OriginUrlMismatchInHistoryUtil"
enum="BooleanAllowed" expires_after="2022-06-04">
<owner>alexmitra@chromium.org</owner>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records when we allow a cross origin push state from a file URL solely
because AllowUniversalAccessFromFileURLs is enabled. This is logged from the
implementation of history.
</summary>
</histogram>
<histogram
name="Android.WebView.UniversalAccess.OriginUrlMismatchInRenderFrame"
enum="BooleanAllowed" expires_after="2022-06-04">
<owner>alexmitra@chromium.org</owner>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records when we allow a cross origin push state from a file URL solely
because AllowUniversalAccessFromFileURLs is enabled. This is logged from the
implementation of the frame renderer.
</summary>
</histogram>
<histogram name="Android.WebView.UserAgent.Valid" enum="WebViewUserAgentType"
expires_after="M88">
<obsolete>
Invalid UAs instead just throw an exception in M89+.
</obsolete>
<owner>torne@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Recorded when an app passes a custom user agent to
WebSettings.setUserAgentString. We check if the UA is valid, and if not we
try to interpret it in several ways and record which (if any) made sense.
</summary>
</histogram>
<histogram name="Android.WebView.Visibility.Global" enum="WebViewVisibility"
expires_after="2022-06-01">
<owner>idries@google.com</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the global visibility state of WebView in seconds, updated with
every Metrics upload. The Visible bucket counts total seconds that any
WebView was visible (the view itself was visible, and was attached to the
view hierarchy of a visible window). The NotVisble bucket counts time since
WebView initialization for which no WebView was considered visible, or no
WebView existed. The total of these two buckets reflects the amount of time
covered by metrics collection.
</summary>
</histogram>
<histogram name="Android.WebView.Visibility.PerWebView"
enum="WebViewVisibility" expires_after="2022-06-01">
<owner>idries@google.com</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records per-WebView visibility duration in seconds, updated with every
Metrics upload. The Visible bucket counts the total time in seconds that
each WebView was considered visible (the view itself was visible, and was
attached to the view hierarchy of a visible window). If more than one
WebView is considered visible, then each WebView contributes independently.
The NotVisible bucket counts the duration that each WebView exists but not
in a visible state. As with the Visible bucket, each WebView contributes
independently, and thus this bucket is not incremented when no WebViews
exist.
</summary>
</histogram>
<histogram name="Android.WebView.WebViewOpenWebVisible.Global"
enum="WebViewOpenWebVisibility" expires_after="2022-06-01">
<owner>idries@google.com</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Identical to Android.WebView.Visibility.Global except that the
OpenWebContentVisible bucket only records time that any WebView is visible
and displaying contents which originate from the 'Open Web' (in this context
that is taken to mean having an HTTP or HTTPS scheme). The
OpenWebContentNotVisible bucket records time when the WebView was not
visible or not displaying contents which originate from an HTTP or HTTPS
scheme.
</summary>
</histogram>
<histogram name="Android.WebView.WebViewOpenWebVisible.PerWebView"
enum="WebViewOpenWebVisibility" expires_after="2022-06-01">
<owner>idries@google.com</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Identical to Android.WebView.Visibility.PerWebView except that the
OpenWebContentVisible bucket only records time that each WebView is visible
and displaying contents which originate from the 'Open Web' (in this context
that is taken to mean having an HTTP or HTTPS scheme). The
OpenWebContentNotVisible bucket records time when each WebView was not
visible or not displaying contents which originate from an HTTP or HTTPS
scheme.
</summary>
</histogram>
<histogram name="Android.WebView.WebViewOpenWebVisible.ScreenPortion"
enum="WebViewOpenWebScreenPortion" expires_after="2021-09-01">
<obsolete>
Obsolete from 2021-07, use
Android.WebView.WebViewOpenWebVisible.ScreenPortion2 instead. That metric
has a separate bucket recording when the coverage is exactly zero.
</obsolete>
<owner>idries@google.com</owner>
<owner>ntfschr@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the number of seconds that WebView is displaying Open Web Content
for each bucket of screen proportion, updated with every Metrics upload. For
the purposes of bucketing this is rounded down.
</summary>
</histogram>
<histogram name="Android.WebView.WebViewOpenWebVisible.ScreenPortion2"
enum="WebViewOpenWebScreenPortion" expires_after="2022-08-01">
<owner>idries@google.com</owner>
<owner>ntfschr@chromium.org</owner>
<owner>peconn@chromium.org</owner>
<owner>src/android_webview/OWNERS</owner>
<summary>
Records the number of seconds that WebView is displaying Open Web Content
for each bucket of screen proportion, updated with every Metrics upload. For
the purposes of bucketing this is rounded down. A separate bucket is used
when the screen coverage is exactly zero.
</summary>
</histogram>
<histogram name="AndroidSearchEngineLogo.Events"
enum="AndroidSearchEngineLogoEvents" expires_after="2022-06-01">
<owner>wylieb@chromium.org</owner>
<owner>fgorski@chromium.org</owner>
<summary>
Counts occurences of various events related to the Search Engine Logo
feature. When enabled, the feature will show the logo of the default search
engine in the omnibox. These events record the performance of fetching
non-Google logos.
</summary>
</histogram>
</histograms>
</histogram-configuration>