| <!-- |
| 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 Optimization 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 follow the instructions in the OWNERS file in this directory to find a |
| reviewer. If no OWNERS file exists, please consider signing up at |
| go/reviewing-metrics (Googlers only), as all subdirectories are expected to |
| have an OWNERS file. As a last resort you can send the CL to |
| chromium-metrics-reviews@google.com. |
| --> |
| |
| <histogram-configuration> |
| |
| <histograms> |
| |
| <variants name="OptimizationTarget"> |
| <variant name="AutofillAssistant" summary="Autofill Assistant"/> |
| <variant name="LanguageDetection" summary="Language detection"/> |
| <variant name="ModelValidation" summary="Model validation triggered via CLI"/> |
| <variant name="NotificationPermissions" summary="Notification permissions"/> |
| <variant name="PageEntities" summary="Page entities"/> |
| <variant name="PageTopics" summary="Page topics"/> |
| <variant name="PageTopicsV2" summary="Page topics v2"/> |
| <variant name="PageVisibility" summary="Page visibility"/> |
| <variant name="PainfulPageLoad" summary="Painful page load"/> |
| <variant name="SegmentationChromeLowUserEngagement" |
| summary="Segmentation: Low user engagement with Chrome"/> |
| <variant name="SegmentationChromeStartAndroid" |
| summary="Chrome Start Android"/> |
| <variant name="SegmentationDummyFeature" summary="Dummy feature"/> |
| <variant name="SegmentationNewTab" summary="Segmentation: New tab page user"/> |
| <variant name="SegmentationQueryTiles" summary="Query tiles"/> |
| <variant name="SegmentationShare" summary="Segmentation: Share user"/> |
| <variant name="SegmentationVoice" summary="Segmentation: Voice user"/> |
| </variants> |
| |
| <variants name="OptimizationType"> |
| <variant name="AboutThisSite" |
| summary="Provides 'About this site' data about the site being visited"/> |
| <variant name="BloomFilterValidation" |
| summary="Validates bloom filer allowlist/blocklist based hints"/> |
| <variant name="CompressPublicImages" summary="Compresses public images"/> |
| <variant name="DeferAllScript" summary="Defers execution of script"/> |
| <variant name="DelayAsyncScriptExecution" |
| summary="Delays execution of async scripts"> |
| <obsolete> |
| Removed in M94. |
| </obsolete> |
| </variant> |
| <variant name="DelayCompetingLowPriorityRequests" |
| summary="Delays low priority requests behind in-flight 'important' |
| requests"> |
| <obsolete> |
| Removed in M94. |
| </obsolete> |
| </variant> |
| <variant name="FastHostHints" |
| summary="Provides information about hosts that historically provide a |
| fast and responsive user experience"/> |
| <variant name="LinkPerformance" |
| summary="Provides aggregated performance information for links on the |
| page"/> |
| <variant name="LitePage" |
| summary="HTTP server preview (served from the Data Reduction Proxy)"/> |
| <variant name="LitePageRedirect" |
| summary="HTTPS server preview (served from the litepages service)"> |
| <obsolete> |
| Removed in M84. |
| </obsolete> |
| </variant> |
| <variant name="LiteVideo" |
| summary="Provides information on how to throttle media requests to |
| reduce the adaptive bit rates of media streams."/> |
| <variant name="LoadingPredictor" |
| summary="Provides information about subresources predicted to be on the |
| page"/> |
| <variant name="LoginDetection" |
| summary="Provides information about hosts that are identified as |
| commonly logged-in"/> |
| <variant name="MerchantTrustSignals" |
| summary="Provides trust data related to the merchant."/> |
| <variant name="MerchantTrustSignalsV2" |
| summary="Provides trust data related to the merchant -- version 2."/> |
| <variant name="MetadataFetchValidation" |
| summary="Validates metadata fetch on navigation"/> |
| <variant name="NoScript" |
| summary="Disables the fetching and execution of JavaScript"> |
| <obsolete> |
| Removed in M89. |
| </obsolete> |
| </variant> |
| <variant name="PageEntities" |
| summary="Provides the entities that are present on the page"/> |
| <variant name="PerformanceHints" |
| summary="Provides aggregated performance information about the page"/> |
| <variant name="PriceTracking" |
| summary="Returns price related data for shopping websites"/> |
| <variant name="ResourceLoading" |
| summary="Applies a set of resource loading hints to load the page"> |
| <obsolete> |
| Removed in M89. |
| </obsolete> |
| </variant> |
| <variant name="ShoppingPagePredictor" |
| summary="Determines if a page is shopping related or not"/> |
| </variants> |
| |
| <variants name="PageTextDumpEvent"> |
| <variant name="FinishedLoad" summary="finished load"/> |
| <variant name="FirstLayout" summary="first layout"/> |
| </variants> |
| |
| <variants name="RequestContext"> |
| <variant name="BatchUpdate" summary="Batch update."> |
| <obsolete> |
| Obsolete as of 10/2021. |
| </obsolete> |
| </variant> |
| <variant name="BatchUpdateActiveTabs" |
| summary="Batch update of hints for active tabs"/> |
| <variant name="BatchUpdateGoogleSRP" |
| summary="Batch update of hints for result links off the Google SRP"/> |
| <variant name="BatchUpdateModels" summary="Batch update of models"/> |
| <variant name="Bookmarks" summary="Batch update of hints for bookmarks"/> |
| <variant name="PageNavigation" summary="Page navigation"/> |
| </variants> |
| |
| <histogram name="OptimizationGuide.ApplyDecision.{OptimizationType}" |
| enum="OptimizationGuideOptimizationTypeDecision" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| The decision made for whether {OptimizationType} can be applied on the page |
| load. |
| </summary> |
| <token key="OptimizationType" variants="OptimizationType"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.ApplyDecisionAsync.{OptimizationType}" |
| enum="OptimizationGuideOptimizationTypeDecision" expires_after="2022-04-17"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records the decision made for whether {OptimizationType} can be applied on a |
| page load when all information for that page load has been sufficiently |
| gathered. This will be recorded once per callback registered, so if two |
| callbacks were registered for {OptimizationType} on the same page load, this |
| will be recorded twice for that case. |
| </summary> |
| <token key="OptimizationType" variants="OptimizationType"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.ClearFetchedHints.StoreAvailable" |
| units="BooleanAvailable" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records whether the optimization guide store was available when fetched |
| hints are cleared from the store after browser history is cleared. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.ClearHostModelFeatures.StoreAvailable" |
| units="BooleanAvailable" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records whether the optimization guide store was available when host model |
| features are cleared from the store after browser history is cleared. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintCache.HintType.Loaded" |
| enum="HintCacheStoreEntryType" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the store entry type of a hint when it is loaded from the hint cache |
| store. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintCacheLevelDBStore.LoadMetadataResult" |
| enum="OptimizationGuideHintCacheLevelDBStoreLoadMetadataResult" |
| expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the result of loading the metadata while initializing the |
| HintCacheLevelDBStore. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintCacheLevelDBStore.Status" |
| enum="OptimizationGuideHintCacheLevelDBStoreStatus" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records each status change within the HintCacheLevelDBStore. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.GetHintsRequest.ActiveRequestCanceled.{RequestContext}" |
| units="counts" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records when an in-flight hints request for {RequestContext} was canceled |
| before it finished. |
| </summary> |
| <token key="RequestContext" variants="RequestContext"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.GetHintsRequest.DroppedHosts.{RequestContext}" |
| units="counts" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records the number of hosts that were dropped for a request made with |
| {RequestContext}, if the number of hosts dropped is non-zero. Will record at |
| most once per fetch. |
| </summary> |
| <token key="RequestContext" variants="RequestContext"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.GetHintsRequest.DroppedUrls.{RequestContext}" |
| units="counts" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records the number of URLs that were dropped for a request made with |
| {RequestContext}, if the number of URLs dropped is non-zero. Will record at |
| most once per fetch. |
| </summary> |
| <token key="RequestContext" variants="RequestContext"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.GetHintsRequest.FetchLatency.{RequestContext}" |
| units="ms" expires_after="2022-04-17"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| The duration of a request to fetch hints from the remote Optimization Guide |
| Service starts until it completes. Recorded every time hints are fetched and |
| parsed successfully. |
| </summary> |
| <token key="RequestContext" variants="RequestContext"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsFetcher.GetHintsRequest.HintCount" |
| units="units" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of hints received from the remote Optimization Guide |
| Service for every successful HintsFetch request. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsFetcher.GetHintsRequest.HostCount" |
| units="total host count" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of hosts selected for sending a hint request. This will |
| be captured when any hint request is initiated. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsFetcher.GetHintsRequest.NetErrorCode" |
| enum="NetErrorCodes" expires_after="2022-05-08"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Net error codes for HintsFetch requests to the Optimization Guide Service on |
| success and failure. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsFetcher.GetHintsRequest.Status" |
| enum="HttpResponseCode" expires_after="2022-05-08"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| For each HintsFetch request to the Optimization Guide Service, log the HTTP |
| response code on success and failure. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsFetcher.GetHintsRequest.UrlCount" |
| units="total url count" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of URLs selected for sending a hint request. This will be |
| captured when any hint request is initiated. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsFetcher.RequestStatus.BatchUpdate" |
| enum="OptimizationGuideHintsFetcherRequestStatus" expires_after="M106"> |
| <obsolete> |
| Obsolete as of 12/2021. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| The status of making a Batch Update context request of the OptmizationGuide |
| HintsFetcher. This includes whether a network request was actually sent or |
| not. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.RequestStatus.BatchUpdate.{RequestContext}" |
| enum="OptimizationGuideHintsFetcherRequestStatus" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| The status of making a request using {RequestContext} of the |
| OptmizationGuide HintsFetcher. This includes whether a network request was |
| actually sent or not. |
| </summary> |
| <token key="RequestContext" variants="RequestContext"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsFetcher.RequestStatus.PageNavigation" |
| enum="OptimizationGuideHintsFetcherRequestStatus" expires_after="M106"> |
| <obsolete> |
| Obsolete as of 12/2021. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| The status of making a Page Navigation context request of the |
| OptmizationGuide HintsFetcher. This includes whether a network request was |
| actually sent or not. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.TopHostProvider.BlacklistSize.OnInitialize" |
| units="total host count" expires_after="2021-03-31"> |
| <obsolete> |
| Deprecated as of 2021/02. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of hosts placed on the HintsFetcherTopHostBlacklist when |
| it is initialized. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.TopHostProvider.BlacklistSize.OnRequest" |
| units="total host count" expires_after="2021-03-31"> |
| <obsolete> |
| Deprecated as of 2021/02. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of hosts on the HintsFetcherTopHostBlacklist when top |
| hosts are requested. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.TopHostProvider.BlocklistSize.OnInitialize" |
| units="total host count" expires_after="M94"> |
| <obsolete> |
| Deprecated as of 2021/06. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of hosts placed on the HintsFetcherTopHostBlocklist when |
| it is initialized. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsFetcher.TopHostProvider.BlocklistSize.OnRequest" |
| units="total host count" expires_after="M94"> |
| <obsolete> |
| Deprecated as of 2021/06. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of hosts on the HintsFetcherTopHostBlocklist when top |
| hosts are requested. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsManager.ActiveTabUrlsToFetchFor" |
| units="counts" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| The number of active tab URLs that did not have a hint on device, and thus, |
| required a fetch for a new hint. Recorded when a fetch is initiated to the |
| remote Optimization Guide Service for active tabs, roughly once an hour but |
| configurable via experiment params. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.HintsManager.ConcurrentBatchUpdateFetches" |
| units="counts" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| The number of active batch update hints fetches initiated by the hints |
| manager. Recorded when a fetch is initiated to the remote Optimization Guide |
| Service for a batch update context (i.e. on SRP, other UI surfaces, etc.). |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsManager.ConcurrentPageNavigationFetches" |
| units="counts" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| The number of active hints fetches initiated by the hints manager. Recorded |
| when a fetch is initiated to the remote Optimization Guide Service at |
| navigation start. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsManager.PageNavigationHintsReturnedBeforeDataFlushed" |
| units="BooleanStored" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records whether a page navigation hints fetch returned before navigation |
| data used to record additional page load metrics is flushed. Recorded only |
| for navigations that have a hints fetch initiated for it. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.HintsManager.RaceNavigationFetchAttemptStatus" |
| enum="OptimizationGuideRaceNavigationFetchAttemptStatus" |
| expires_after="2022-06-19"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Status of a fetch attempt being raced against the current navigation start |
| and whether it includes hosts and urls. Recorded on navigation start |
| (including client redirects) by the hints manager. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.IsPredictionModelValid.{OptimizationTarget}" |
| units="BooleanValid" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records whether the prediction model being constructed for |
| {OptimizationTarget} is valid or not. Recorded when prediction models are |
| loaded into memory by the prediction manager. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.MetadataFetchValidation.Result" |
| enum="Boolean" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records whether the metadata fetch validation received the hints correctly. |
| Recorded on iOS when the mainframe navigation commits. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ModelExecutor.ExecutionLatency.{OptimizationTarget}" |
| units="ms" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the time duration it took execute the model for |
| {OptimizationTarget}. Recorded once per model execution for |
| {OptimizationTarget}. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ModelExecutor.ExecutionStatus.{OptimizationTarget}" |
| enum="OptimizationGuideExecutionStatus" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the result of attempting to execute a {OptimizationTarget} model, |
| including loading the file from disk. Recorded once per model execution |
| attempt for {OptimizationTarget}. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ModelExecutor.ModelAvailableToLoad.{OptimizationTarget}" |
| enum="BooleanAvailable" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records whether the model file for {OptimizationTarget} is available on disk |
| at the time when it needs to be loaded into memory for a requested |
| execution. Recorded once per model load attempt for {OptimizationTarget}. |
| Note that callers may separately check whether a model is available before |
| calling the code path where this histogram is recorded. If this histogram |
| has 100% of samples in the true bucket, make sure to double-check that there |
| isn't a separate histogram specific to the model. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ModelExecutor.ModelLoadingDuration.{OptimizationTarget}" |
| units="ms" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the time duration it took to load a model file (un)successfully for |
| {OptimizationTarget}. Recorded once per model load attempt for |
| {OptimizationTarget}. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ModelExecutor.ModelLoadingResult.{OptimizationTarget}" |
| enum="ModelExecutorLoadingState" expires_after="M106"> |
| <obsolete> |
| Removed in favor of OptimizationGuide.ModelExecutor.ExecutionStatus in M98. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the result of a loading a model with a provided file for |
| {OptimizationTarget}. Recorded once per model load attempt for |
| {OptimizationTarget}. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.ModelExecutor.RunCount.{OptimizationTarget}" |
| units="count" expires_after="M94"> |
| <obsolete> |
| Removed 2021-May. |
| </obsolete> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the number of times the model for the {OptimizationTarget} |
| optimization target was run during the lifetime of the model being in |
| memory. Recorded every time the model is unloaded from memory. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ModelExecutor.TaskExecutionLatency.{OptimizationTarget}" |
| units="ms" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the execution latency for the {OptimizationTarget} model run by the |
| model executor from when the task is posted from execution complete. |
| Recorded once per {OptimizationTarget} model execution attempt. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ModelExecutor.TaskSchedulingLatency.{OptimizationTarget}" |
| units="ms" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the duration a {OptimizationTarget} model execution request spent |
| waiting for the background task queue to run the task. Recorded once per |
| {OptimizationTarget} model execution attempt. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ModelExecutor.TimeSincePreviousRun.{OptimizationTarget}" |
| units="ms" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the time duration between runs of the model for |
| {OptimizationTarget}. Recorded once for every model run after the first. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.ModelFilesVerified.{OptimizationTarget}" |
| enum="BooleanValid" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records whether all model files existed on disk when the model was requested |
| to be loaded for {OptimizationTarget}. The model file itself and any |
| additional files must be present on disk for this check to report success. |
| Recorded once per attempted model load, which happens when a feature is |
| registered with the Optimization Guide. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.OptimizationFilterStatus.{OptimizationType}" |
| enum="OptimizationGuideOptimizationFilterStatus" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Status of processing OptimizationFilter configuration for |
| {OptimizationType}. Recorded when the OptimizationGuideService receives a |
| notification to process hints. |
| </summary> |
| <token key="OptimizationType" variants="OptimizationType"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.OptimizationHintsComponent.MajorVersion" |
| units="major version number" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records the major version of the Optimization Hints component that was |
| pushed to the client. This will be recorded at startup and when a new |
| component is received. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageContentAnnotationsService.ContentAnnotated" |
| enum="BooleanAnnotated" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records whether the page content was annotated successfully, if submitted |
| for annotation. This will approximately be once a page load after the page |
| load has finished loading. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageContentAnnotationsService.ContentAnnotationsStorageStatus" |
| enum="OptimizationGuidePageContentAnnotationsStorageStatus" |
| expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records the status of whether the content annotations were stored in History |
| Service when the page content has been annotated successfully. This will be |
| recorded multiple times per page load, for both the related searches as well |
| as the model annotations once the page has finished loading. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageContentAnnotationsService.ModelAvailable" |
| enum="BooleanAvailable" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Whether the page topics model was available to execute when requested. |
| Recorded once per execution attempt. Note that this histogram supersedes |
| OptimizationGuide.ModelExecutor.ModelAvailableToLoad.PageTopics. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageContentAnnotationsService.PageEntitiesExecutionLatency" |
| units="ms" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the execution latency for the PageEntities model from when the model |
| manager requests the execution to completion and only if a result is |
| returned. Recorded once per model execution attempt. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageContentAnnotationsService.RelatedSearchesExtracted" |
| enum="BooleanAnnotated" expires_after="M106"> |
| <owner>mahmadi@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records whether related searches were successfully extracted from Google |
| SRP, if requested. This will be recorded approximately once per page load |
| after the page has finished loading. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PageTextDump.AbandonedRequests" |
| units="count" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| The number of text dump requests that were sent to the renderer and did not |
| get a response after a grace period following DidFinishLoad, thus were |
| abandoned. This may be recorded multiple times per pageload. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageTextDump.FrameDumpLength.{PageTextDumpEvent}" |
| units="bytes" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| The length, in bytes, of every completed frame dump for the |
| {PageTextDumpEvent} event. Note that these values are capped at runtime to |
| an experimentally controlled value. |
| </summary> |
| <token key="PageTextDumpEvent" variants="PageTextDumpEvent"> |
| <variant name=""> |
| <obsolete> |
| Base histogram. Use variants of this histogram instead. |
| </obsolete> |
| </variant> |
| </token> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageTextDump.OutstandingRequests.DidFinishLoad" |
| units="count" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| The number of outstanding page text dump requests at DidFinishLoad. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageTextDump.TimeUntilFrameDisconnected.{PageTextDumpEvent}" |
| units="ms" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| The duration it took for a frame dump request, for the {PageTextDumpEvent} |
| event, from being sent until being canceled. Recorded every time a request |
| is canceled. This normally occurs because the mojo pipe disconnected. |
| </summary> |
| <token key="PageTextDumpEvent" variants="PageTextDumpEvent"> |
| <variant name=""> |
| <obsolete> |
| Base histogram. Use variants of this histogram instead. |
| </obsolete> |
| </variant> |
| </token> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PageTextDump.TimeUntilFrameDumpCompleted.{PageTextDumpEvent}" |
| units="ms" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| The duration it took for a frame dump request for the {PageTextDumpEvent} |
| event, to complete successfully. Recorded every time a request completes |
| successfully. |
| </summary> |
| <token key="PageTextDumpEvent" variants="PageTextDumpEvent"> |
| <variant name=""> |
| <obsolete> |
| Base histogram. Use variants of this histogram instead. |
| </obsolete> |
| </variant> |
| </token> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionManager.DownloadServiceAvailabilityBlockedFetch" |
| units="BooleanBlocked" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records whether the Download Service was unavailable and blocked a fetch |
| that would have happened otherwise. Only recorded if model downloads are |
| enabled for the session. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionManager.HasHostModelFeaturesForHost" |
| enum="Boolean" expires_after="2021-10-13"> |
| <obsolete> |
| Deprecated as of 2021/10. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Whether the PredictionManager had HostModelFeatures for the host of the |
| navigation. Recorded when ShouldTargetNavigation is called. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PredictionManager.HostModelFeaturesMapSize" |
| units="total host count" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of host model features loaded into the map used by the |
| PredictionManager. This is recorded when the host model features are loaded |
| from the store. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PredictionManager.IsDownloadUrlValid" |
| units="BooleanValid" expires_after="M106"> |
| <obsolete> |
| Replaced by |
| OptimizationGuide.PredictionManager.IsDownloadUrlValid.{OptimizationTarget} |
| in M96. |
| </obsolete> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records whether the download URL received from the remote Optimization Guide |
| server is valid. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionManager.IsDownloadUrlValid.{OptimizationTarget}" |
| units="BooleanValid" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records whether the download URL for {OptimizationTarget} received from the |
| remote Optimization Guide server is valid. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram base="true" |
| name="OptimizationGuide.PredictionManager.ModelTypeChanged.{OptimizationTarget}" |
| units="BooleanChanged" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records whether the model type changed for {OptimizationTarget} from model |
| proto to model file, or vice versa when the in-memory model for an |
| optimization target has been loaded. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelDownloadManager.DownloadStatus" |
| enum="OptimizationGuidePredictionModelDownloadStatus" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| The status of verifying and processing model downloads. Recorded once per |
| file that was successfully downloaded via the Download Service. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelDownloadManager.DownloadSucceeded" |
| units="BooleanSuccess" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records whether the Download Service notified whether a model download has |
| succeeded or failed. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelDownloadManager.ReplaceFileError" |
| enum="PlatformFileError" expires_after="M106"> |
| <obsolete> |
| Replaced by |
| OptimizationGuide.PredictionModelDownloadManager.ReplaceFileError.{OptimizationTarget} |
| in M96. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the exact error whenever writing a model file fails at the step |
| where the model is moved from the scratch directory to its final location. |
| Recorded every time a model file is downloaded and being processed for |
| storage. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelDownloadManager.ReplaceFileError.{OptimizationTarget}" |
| enum="PlatformFileError" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the exact error whenever writing a model file fails at the step |
| where the model is moved from the scratch directory to its final location. |
| Recorded every time a {OptimizationTarget} model file is downloaded and |
| being processed for storage. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram base="true" |
| name="OptimizationGuide.PredictionModelEvaluationLatency.{OptimizationTarget}" |
| units="ms" expires_after="2021-10-13"> |
| <obsolete> |
| Deprecated as of 2021/10. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| The duration of evaluating a prediction model for a registered optimization |
| target. Recorded every time a prediction model is successfuly evaluated by |
| the prediction manager. Not recorded if a cached decision is used or if the |
| evaluation fails. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PredictionModelExpired" |
| units="BooleanExpired" expires_after="M96"> |
| <obsolete> |
| Deprecated in favor of OptimizationTarget variant as of 09/2021. |
| </obsolete> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Records whether a prediction model expired if it was not updated or used |
| within the last 30 days by default, but can change subject to Finch |
| configuration. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PredictionModelExpired.{OptimizationTarget}" |
| enum="BooleanExpired" expires_after="M106"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records whether a prediction model for an OptimizationTarget expired if it |
| was not updated or used within the configured expiration time, but can |
| change subject to Finch or server configuration. Recorded once per browser |
| startup. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelFetcher.GetModelsRequest.HostCount" |
| units="total host count" expires_after="M94"> |
| <obsolete> |
| Obsolete as of 04/2021. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of hosts included in a remote Optimization Guide Service |
| client model request. This will be captured when any GetModelsRequest is |
| initiated. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelFetcher.GetModelsResponse.HostModelFeatureCount" |
| units="units" expires_after="M94"> |
| <obsolete> |
| Obsolete as of 04/2021. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the number of host model features received from the remote |
| Optimization Guide Service for every successful GetModelsRequest. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelFetcher.GetModelsResponse.NetErrorCode" |
| enum="NetErrorCodes" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Net error codes for GetModelsRequest to the Optimization Guide Service on |
| success and failure. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelFetcher.GetModelsResponse.Status" |
| enum="HttpResponseCode" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| For each GetModelsRequest to the Optimization Guide Service, log the HTTP |
| response code on success and failure. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelLoadedVersion.{OptimizationTarget}" |
| units="version number" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the version of the prediction model that was loaded from the store |
| and used until updated by a fetch. Recorded only if the loaded model was |
| valid. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelStore.HostModelFeaturesLoadMetadataResult" |
| enum="BooleanLoaded" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the result of loading the host model features metadata while |
| initializing the OptimizationGuideStore. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelUpdateVersion.{OptimizationTarget}" |
| units="version number" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the version of the prediction model that was fetched as an update. |
| Recorded only if a model returned was valid and is available for use. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PredictionModelValidationLatency.{OptimizationTarget}" |
| units="ms" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Records the duration of construction and validation of a prediction model |
| when the prediction manager loads it into memory for a given optimization |
| target. Recorded only if the model is valid and successfully loaded into |
| memory for use. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.ProcessHintsResult" |
| enum="OptimizationGuideProcessHintsResult" expires_after="2022-06-12"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Whether processing the hints succeeded or failed at a particular step. |
| Recorded when the OptimizationGuideService receives a notification to |
| process hints. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.ProcessingComponentAtShutdown" |
| enum="BooleanYesNo" expires_after="M106"> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| Whether the Optimization Hints component was being processed when the hints |
| manager is told to shutdown. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PushNotifications.CachedNotificationCount" |
| units="count" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| The number of cached push notifications that were pulled from the Android |
| cache after the native persistent store became fully initialized. Recorded |
| once per native startup in cases where the cache did not overflow. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PushNotifications.CachedNotificationsHandledSuccessfully" |
| enum="BooleanSuccess" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Whether the push notification cache was handled successfully and was able to |
| be cleared out. Recorded once per each attempt at handling one cache shard. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PushNotifications.DidOverflow" |
| enum="Boolean" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records whether the Android push notification cache overflowed and caused |
| the whole store to be purged. Recorded once per native startup. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PushNotifications.GotPushNotification" |
| enum="Boolean" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary>Records a true sample for every incoming push notification.</summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.PushNotifications.PushNotificationHandledSuccessfully" |
| enum="BooleanSuccess" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Whether an incoming push notification was handled successfully. Recorded |
| once for every such notification. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PushNotifications.ReadCacheResult" |
| enum="OptimizationGuideReadCacheResult" expires_after="M106"> |
| <owner>robertogden@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the result of reading the cache of push notifications and parsing |
| the encoded cache into protobufs. This is recorded once for every encoded |
| protobuf that is read from cache. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.PushNotifications.ReceivedNotificationType" |
| enum="OptimizationType" expires_after="M106"> |
| <owner>xingliu@chromium.org</owner> |
| <owner>chrome-intelligence-core@google.com</owner> |
| <summary> |
| Records the OptimizationType of the push notification. Recorded when the |
| notification is received and before the notification payload is delivered to |
| feature handlers. |
| </summary> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.RemoteFetchingEnabled" |
| units="BooleanEnabled" expires_after="2022-06-05"> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| Whether the session is enabled for fetching information from the remote |
| Optimization Guide Service. Recorded when the profile is initialized for the |
| session if Optimization Hints are enabled and the profile is a non-incognito |
| profile. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="OptimizationGuide.ShouldTargetNavigation.PredictionModelStatus.{OptimizationTarget}" |
| enum="OptimizationGuidePredictionManagerModelStatus" |
| expires_after="2021-10-13"> |
| <obsolete> |
| Deprecated as of 2021/10. |
| </obsolete> |
| <owner>mcrouse@chromium.org</owner> |
| <owner>sophiechang@chromium.org</owner> |
| <summary> |
| The status of the prediction model for an optimization target within the |
| prediction manager. Recorded when the manager is asked if a navigation |
| should be targeted and the decision for the navigation has not already been |
| made. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| <histogram name="OptimizationGuide.TargetDecision.{OptimizationTarget}" |
| enum="OptimizationGuideOptimizationTargetDecision" expires_after="M106"> |
| <obsolete> |
| Obsolete as of 07/2021. |
| </obsolete> |
| <owner>sophiechang@chromium.org</owner> |
| <owner>mcrouse@chromium.org</owner> |
| <summary> |
| The decision made for whether the page load matches the optimization target. |
| </summary> |
| <token key="OptimizationTarget" variants="OptimizationTarget"/> |
| </histogram> |
| |
| </histograms> |
| |
| </histogram-configuration> |