| // Copyright 2019 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.android_webview.common; |
| |
| import org.chromium.base.BaseFeatures; |
| import org.chromium.base.BaseSwitches; |
| import org.chromium.blink_public.common.BlinkFeatures; |
| import org.chromium.blink_scheduler.BlinkSchedulerFeatures; |
| import org.chromium.cc.base.CcFeatures; |
| import org.chromium.cc.base.CcSwitches; |
| import org.chromium.components.autofill.AndroidAutofillFeatures; |
| import org.chromium.components.autofill.AutofillFeatures; |
| import org.chromium.components.feature_engagement.FeatureConstants; |
| import org.chromium.components.metrics.AndroidMetricsFeatures; |
| import org.chromium.components.metrics.MetricsFeatures; |
| import org.chromium.components.metrics.MetricsSwitches; |
| import org.chromium.components.network_session_configurator.NetworkSessionSwitches; |
| import org.chromium.components.variations.VariationsSwitches; |
| import org.chromium.components.viz.common.VizFeatures; |
| import org.chromium.content_public.common.ContentFeatures; |
| import org.chromium.content_public.common.ContentSwitches; |
| import org.chromium.gpu.config.GpuFeatures; |
| import org.chromium.gpu.config.GpuSwitches; |
| import org.chromium.net.NetFeatures; |
| import org.chromium.services.network.NetworkServiceFeatures; |
| import org.chromium.services.tracing.TracingServiceFeatures; |
| import org.chromium.ui.accessibility.AccessibilityFeatures; |
| import org.chromium.ui.base.UiAndroidFeatures; |
| |
| /** |
| * List of experimental features/flags supported for user devices. Add features/flags to this list |
| * with scrutiny: any feature/flag in this list can be enabled for production Android devices, and |
| * so it must not compromise the Android security model (i.e., WebView must still protect the app's |
| * private data from being user visible). |
| * |
| * <p>This lives in the common package so it can be shared by dev UI (to know which features/flags |
| * to display) as well as the WebView implementation (so it knows which features/flags are safe to |
| * honor). |
| */ |
| public final class ProductionSupportedFlagList { |
| // Do not instantiate this class. |
| private ProductionSupportedFlagList() {} |
| |
| /** |
| * A list of commandline flags supported on user devices. If updating this list, please also |
| * update enums.xml. See android_webview/docs/developer-ui.md |
| * (https://chromium.googlesource.com/chromium/src/+/HEAD/android_webview/docs/developer-ui.md#Adding-your-flags-and-features-to-the-UI). |
| */ |
| public static final Flag[] sFlagList = { |
| Flag.commandLine(AwSwitches.HIGHLIGHT_ALL_WEBVIEWS, |
| "Highlight the contents (including web contents) of all WebViews with a yellow " |
| + "tint. This is useful for identifying WebViews in an Android " |
| + "application."), |
| Flag.commandLine(AwSwitches.WEBVIEW_VERBOSE_LOGGING, |
| "WebView will log additional debugging information to logcat, such as " |
| + "variations and commandline state."), |
| Flag.commandLine(CcSwitches.SHOW_COMPOSITED_LAYER_BORDERS, |
| "Renders a border around compositor layers to help debug and study layer " |
| + "compositing."), |
| Flag.commandLine(CcSwitches.ANIMATED_IMAGE_RESUME, |
| "Resumes animated images from where they were."), |
| Flag.commandLine(AwSwitches.FINCH_SEED_EXPIRATION_AGE, |
| "Forces all variations seeds to be considered stale.", "0"), |
| Flag.commandLine(AwSwitches.FINCH_SEED_IGNORE_PENDING_DOWNLOAD, |
| "Forces the WebView service to reschedule a variations seed download job even " |
| + "if one is already pending."), |
| Flag.commandLine(AwSwitches.FINCH_SEED_NO_CHARGING_REQUIREMENT, |
| "Forces WebView's service to always schedule a new variations seed download " |
| + "job, even if the device is not charging. Note this switch may be " |
| + "necessary for testing on Android emulators as these are not always " |
| + "considered to be charging."), |
| Flag.commandLine(AwSwitches.FINCH_SEED_MIN_DOWNLOAD_PERIOD, |
| "Disables throttling of variations seed download jobs.", "0"), |
| Flag.commandLine(AwSwitches.FINCH_SEED_MIN_UPDATE_PERIOD, |
| "Disables throttling of new variations seed requests to the WebView service.", |
| "0"), |
| Flag.commandLine(MetricsSwitches.FORCE_ENABLE_METRICS_REPORTING, |
| "Forces WebView's metrics reporting to be enabled. This overrides user " |
| + "settings and capacity sampling, but does not override the app's " |
| + "choice to opt-out."), |
| Flag.commandLine(AwSwitches.WEBVIEW_LOG_JS_CONSOLE_MESSAGES, |
| "Mirrors JavaScript console messages to system logs."), |
| Flag.commandLine(BaseSwitches.ENABLE_CRASH_REPORTER_FOR_TESTING, |
| "Used for turning on Breakpad crash reporting in a debug environment where " |
| + "crash reporting is typically compiled but disabled."), |
| Flag.commandLine(GpuSwitches.DISABLE_GPU_RASTERIZATION, |
| "Disables GPU rasterization, i.e. rasterizes on the CPU only."), |
| Flag.commandLine(GpuSwitches.IGNORE_GPU_BLOCKLIST, |
| "Overrides the built-in software rendering list and enables " |
| + "GPU acceleration on unsupported device configurations."), |
| Flag.commandLine(AwSwitches.WEBVIEW_ENABLE_MODERN_COOKIE_SAME_SITE, |
| "Enables modern SameSite cookie behavior: 1) SameSite=Lax by default " |
| + "(cookies without a SameSite attribute are treated as SameSite=Lax); " |
| + "2) Schemeful Same-Site (site boundaries include the URL scheme)."), |
| Flag.commandLine(ContentSwitches.SITE_PER_PROCESS, |
| "Security mode that enables site isolation for all sites inside WebView. In " |
| + "this mode, each renderer process will contain pages from at most " |
| + "one site, using out-of-process iframes when needed. Highly " |
| + "experimental."), |
| Flag.commandLine(NetworkSessionSwitches.ENABLE_HTTP2_GREASE_SETTINGS, |
| "Enable sending HTTP/2 SETTINGS parameters with reserved identifiers."), |
| Flag.commandLine(NetworkSessionSwitches.DISABLE_HTTP2_GREASE_SETTINGS, |
| "Disable sending HTTP/2 SETTINGS parameters with reserved identifiers."), |
| Flag.commandLine(VariationsSwitches.ENABLE_FINCH_SEED_DELTA_COMPRESSION, |
| "Enables delta-compression when requesting a new seed from the server."), |
| Flag.commandLine(AwSwitches.WEBVIEW_FENCED_FRAMES, |
| "Enables fenced frames. Also implies SharedStorageAPI, " |
| + "and PrivacySandboxAdsAPIsOverride"), |
| Flag.commandLine(AwSwitches.WEBVIEW_DISABLE_APP_RECOVERY, |
| "Disables WebView from checking for app recovery mitigations."), |
| Flag.commandLine(AwSwitches.WEBVIEW_ENABLE_APP_RECOVERY, |
| "Enables WebView to check for app recovery mitigations."), |
| Flag.commandLine(AwSwitches.WEBVIEW_ENABLE_USER_AGENT_CLIENT_HINTS, |
| "Enables user-agent client hints in WebView."), |
| Flag.baseFeature("DefaultPassthroughCommandDecoder", |
| "Use the passthrough GLES2 command decoder."), |
| Flag.baseFeature(GpuFeatures.WEBVIEW_VULKAN, |
| "Use Vulkan for composite. Requires Android device and OS support. May crash " |
| + "if enabled on unsupported device."), |
| Flag.baseFeature(GpuFeatures.WEBVIEW_SURFACE_CONTROL, |
| "Use SurfaceControl. Requires WebViewThreadSafeMedia and Android device and OS " |
| + "support."), |
| Flag.baseFeature(GpuFeatures.WEBVIEW_THREAD_SAFE_MEDIA, |
| "Use thread-safe media path, requires Android P."), |
| Flag.baseFeature(VizFeatures.ALLOW_BYPASS_RENDER_PASS_QUADS, |
| "Enable bypass render pass for RenderPassDrawQuads"), |
| Flag.baseFeature(VizFeatures.WEBVIEW_NEW_INVALIDATE_HEURISTIC, |
| "More robust heuristic for calling Invalidate"), |
| Flag.baseFeature( |
| VizFeatures.WEBVIEW_VULKAN_INTERMEDIATE_BUFFER, "For debugging vulkan"), |
| Flag.baseFeature(VizFeatures.ALLOW_UNDAMAGED_NONROOT_RENDER_PASS_TO_SKIP, |
| "Enable optimization for skipping undamaged nonroot render passes."), |
| Flag.baseFeature( |
| GpuFeatures.USE_GLES2_FOR_OOP_R, "Force Skia context to use es2 only."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_CONNECTIONLESS_SAFE_BROWSING, |
| "Uses GooglePlayService's 'connectionless' APIs for Safe Browsing " |
| + "security checks."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_APPS_PACKAGE_NAMES_SERVER_SIDE_ALLOWLIST, |
| "Enables usage of server-side allowlist filtering of" |
| + " app package names."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_BROTLI_SUPPORT, |
| "Enables brotli compression support in WebView."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_EXTRA_HEADERS_SAME_ORIGIN_ONLY, |
| "Only allow extra headers added via loadUrl() to be sent to the same origin " |
| + "as the original request."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_DISPLAY_CUTOUT, |
| "Enables display cutout (notch) support in WebView for Android P and above."), |
| Flag.baseFeature(BlinkFeatures.WEBVIEW_ACCELERATE_SMALL_CANVASES, |
| "Accelerate all canvases in webview."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_MIXED_CONTENT_AUTOUPGRADES, |
| "Enables autoupgrades for audio/video/image mixed content when mixed content " |
| + "mode is set to MIXED_CONTENT_COMPATIBILITY_MODE"), |
| Flag.baseFeature(AwFeatures.WEBVIEW_JAVA_JS_BRIDGE_MOJO, |
| "Enables the new Java/JS Bridge code path with mojo implementation."), |
| Flag.baseFeature( |
| AwFeatures.WEBVIEW_ORIGIN_TRIALS, "Enables Origin Trials support on WebView."), |
| Flag.baseFeature(BlinkFeatures.GMS_CORE_EMOJI, |
| "Enables retrieval of the emoji font through GMS Core " |
| + "improving emoji glyph coverage."), |
| Flag.baseFeature( |
| AndroidAutofillFeatures |
| .ANDROID_AUTOFILL_VIEW_STRUCTURE_WITH_FORM_HIERARCHY_LAYER_NAME, |
| "When enabled, Android Autofill ViewStructures contain an additional " |
| + "hierarchy level."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_SPLIT_CREDIT_CARD_NUMBERS_CAUTIOUSLY, |
| "Split credit card numbers over multiple fields more cautiously."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_ENABLE_DEPENDENT_LOCALITY_PARSING, |
| "Enables parsing dependent locality fields (e.g. Bairros in Brazil)."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_ENABLE_EXPIRATION_DATE_IMPROVEMENTS, |
| "Enables various improvements to handling expiration dates."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_ENABLE_SUPPORT_FOR_PHONE_NUMBER_TRUNK_TYPES, |
| "Rationalizes city-and-number and city-code fields to the " |
| + "correct trunk-prefix types."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_ENFORCE_DELAYS_IN_STRIKE_DATABASE, |
| "Enforce delay between offering Autofill opportunities in the " |
| + "strike database."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_PARSE_ASYNC, |
| "Parse forms asynchronously outside of the UI thread."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_PARSING_PATTERN_PROVIDER, |
| "Enables Autofill to use its new method to retrieve parsing patterns."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_PAGE_LANGUAGE_DETECTION, |
| "Enables Autofill to retrieve the page language for form parsing."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_ALWAYS_PARSE_PLACEHOLDERS, |
| "When enabled, Autofill local heuristics consider the placeholder attribute " |
| + "for determining field types."), |
| Flag.baseFeature(AutofillFeatures.AUTOFILL_SERVER_BEHAVIORS, |
| "When enabled, Autofill will request experimental " |
| + "predictions from the Autofill API."), |
| Flag.baseFeature(FeatureConstants.KEYBOARD_ACCESSORY_PAYMENT_VIRTUAL_CARD_FEATURE, |
| "When enabled, merchant bound virtual cards will be offered in the keyboard " |
| + "accessory."), |
| Flag.baseFeature(NetworkServiceFeatures.PRIVATE_STATE_TOKENS, |
| "Enables the prototype Private State Tokens API."), |
| Flag.commandLine(AwSwitches.WEBVIEW_DISABLE_PACKAGE_ALLOWLIST_THROTTLING, |
| "Disables throttling querying apps package names allowlist components in" |
| + "WebView clients."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_EMPTY_COMPONENT_LOADER_POLICY, |
| "Enables loading a fake empty (no-op) component during WebView startup."), |
| Flag.commandLine(AwSwitches.WEBVIEW_SELECTIVE_IMAGE_INVERSION_DARKENING, |
| "Enables use selective image inversion to automatically darken page, it will be" |
| + " used when WebView is in dark mode, but website doesn't provide dark" |
| + " style."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_FORCE_DARK_MODE_MATCH_THEME, |
| "Automatically darken page if" |
| + " WebView is set to FORCE_DARK_AUTO and the app has dark theme"), |
| Flag.baseFeature(ContentFeatures.VERIFY_DID_COMMIT_PARAMS, |
| "Enables reporting of browser and renderer navigation inconsistencies on" |
| + "navigations"), |
| Flag.baseFeature(ContentFeatures.USER_MEDIA_CAPTURE_ON_FOCUS, |
| "Enables GetUserMedia API will only resolve when the document calling it has" |
| + "focus"), |
| Flag.baseFeature(ContentFeatures.COMPOSITE_BG_COLOR_ANIMATION, |
| "When enabled, the background-color animation runs on the compositor thread."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_USE_METRICS_UPLOAD_SERVICE, |
| "Upload UMA metrics logs through MetricsUploadService not via GMS-core" |
| + " directly."), |
| Flag.baseFeature(AndroidMetricsFeatures.ANDROID_METRICS_ASYNC_METRIC_LOGGING, |
| "Initiate metric uploading on a background thread."), |
| Flag.baseFeature(BlinkFeatures.SET_TIMEOUT_WITHOUT_CLAMP, |
| "Enables faster setTimeout(,0) by removing the 1 ms clamping."), |
| Flag.baseFeature(BlinkFeatures.PAINT_HOLDING_CROSS_ORIGIN, |
| "Defers the first commit until FCP or timeout for cross-origin navigations."), |
| Flag.baseFeature(ContentFeatures.NAVIGATION_NETWORK_RESPONSE_QUEUE, |
| "Schedules tasks related to the navigation network responses on a higher " |
| + "priority task queue."), |
| Flag.baseFeature(ContentFeatures.EARLY_ESTABLISH_GPU_CHANNEL, |
| "Enable establishing the GPU channel early in renderer startup."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_X_REQUESTED_WITH_HEADER_CONTROL, |
| "Restricts insertion of XRequestedWith header on outgoing requests " |
| + "to those that have been allow-listed through the appropriate " |
| + "developer API."), |
| Flag.baseFeature(BlinkFeatures.VIEWPORT_HEIGHT_CLIENT_HINT_HEADER, |
| "Enables the use of sec-ch-viewport-height client hint."), |
| Flag.baseFeature(GpuFeatures.CANVAS_CONTEXT_LOST_IN_BACKGROUND, |
| "Free Canvas2D resources when the webview is in the background."), |
| Flag.baseFeature(GpuFeatures.USE_CLIENT_GMB_INTERFACE, |
| "Uses the ClientGmbInetrface to create GpuMemoryBuffers for Renderers."), |
| Flag.baseFeature(GpuFeatures.USE_GPU_SCHEDULER_DFS, |
| "Uses the new SchedulerDFS GPU job scheduler."), |
| Flag.baseFeature(BlinkFeatures.AUTOFILL_SHADOW_DOM, |
| "Enables Autofill associate form elements with form " |
| + "control elements across shadow boundaries."), |
| Flag.baseFeature(BlinkFeatures.UACH_OVERRIDE_BLANK, |
| "Changes behavior of User-Agent Client Hints to send blank headers " |
| + "when the User-Agent string is overriden"), |
| Flag.baseFeature(BlinkFeatures.MAX_UNTHROTTLED_TIMEOUT_NESTING_LEVEL, |
| "Increases the nesting threshold before which " |
| + "setTimeout(..., <4ms) starts being clamped to 4 ms."), |
| Flag.baseFeature(BlinkFeatures.ESTABLISH_GPU_CHANNEL_ASYNC, |
| "Enables establishing the GPU channel asnchronously when requesting a new " |
| + "layer tree frame sink."), |
| Flag.baseFeature(BlinkFeatures.DECODE_SCRIPT_SOURCE_OFF_THREAD, |
| "If enabled, script source text will be decoded and hashed off the main" |
| + "thread."), |
| Flag.baseFeature(BaseFeatures.OPTIMIZE_DATA_URLS, |
| "Optimizes parsing and loading of data: URLs."), |
| Flag.baseFeature(BlinkFeatures.PREFETCH_FONT_LOOKUP_TABLES, |
| "If enabled, font lookup tables will be prefetched on renderer startup."), |
| Flag.baseFeature(BlinkFeatures.PRECOMPILE_INLINE_SCRIPTS, |
| "If enabled, inline scripts will be stream compiled using a background HTML" |
| + " scanner."), |
| Flag.baseFeature(BaseFeatures.RUN_TASKS_BY_BATCHES, |
| "Run tasks in queue for 8ms before before sending a system message."), |
| Flag.baseFeature(BlinkFeatures.OFFSET_PARENT_NEW_SPEC_BEHAVIOR, |
| "Enables new HTMLElement.offsetParent behavior to match other browsers."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_RECORD_APP_DATA_DIRECTORY_SIZE, |
| "Record the size of the embedding app's data directory"), |
| Flag.baseFeature(BlinkFeatures.EARLY_EXIT_ON_NOOP_CLASS_OR_STYLE_CHANGE, |
| "Early exit when the style or class attribute of a DOM element is set to the" |
| + " same value as before."), |
| Flag.baseFeature(BlinkFeatures.MAIN_THREAD_HIGH_PRIORITY_IMAGE_LOADING, |
| "If enabled, image load tasks on visible pages have high priority."), |
| Flag.baseFeature(BlinkFeatures.THREADED_PRELOAD_SCANNER, |
| "If enabled, the HTMLPreloadScanner will run on a worker thread."), |
| Flag.baseFeature(BlinkFeatures.TIMED_HTML_PARSER_BUDGET, |
| "If enabled, the HTMLDocumentParser will use a budget based on elapsed time" |
| + " rather than token count."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_HIT_TEST_IN_BLINK_ON_TOUCH_START, |
| "Hit test on touch start in blink"), |
| Flag.baseFeature(BaseFeatures.ALIGN_WAKE_UPS, "Align delayed wake ups at 125 Hz"), |
| Flag.baseFeature(BlinkSchedulerFeatures.THREADED_SCROLL_PREVENT_RENDERING_STARVATION, |
| "Enable rendering starvation-prevention during threaded scrolling." |
| + " See https://crbug.com/1315279."), |
| Flag.baseFeature(BlinkSchedulerFeatures.PRIORITIZE_COMPOSITING_AFTER_DELAY_TRIALS, |
| "Controls the delay after which main thread compositing tasks " |
| + "are prioritized over other non-input tasks."), |
| Flag.baseFeature(BaseFeatures.NO_WAKE_UPS_FOR_CANCELED_TASKS, |
| "Controls whether wake ups are possible for canceled tasks."), |
| Flag.baseFeature(BaseFeatures.REMOVE_CANCELED_TASKS_IN_TASK_QUEUE, |
| "Controls whether or not canceled delayed tasks are removed from task queues."), |
| Flag.baseFeature(BlinkFeatures.VIEW_TRANSITION, |
| "Enables the experimental View Transitions API." |
| + " See https://github.com/WICG/view-transitions/blob/main/explainer.md."), |
| Flag.baseFeature(BlinkFeatures.VIEW_TRANSITION_ON_NAVIGATION, |
| "Enables the experimental View Transitions API for navigations." |
| + " See https://github.com/WICG/view-transitions/blob/main/explainer.md."), |
| Flag.baseFeature(BlinkFeatures.CSS_OVERFLOW_FOR_REPLACED_ELEMENTS, |
| "Enables respecting the CSS overflow property on replaced elements." |
| + " See https://chromestatus.com/feature/5137515594383360."), |
| Flag.baseFeature(GpuFeatures.INCREASED_CMD_BUFFER_PARSE_SLICE, |
| "Enable the use of an increased parse slice size per command buffer before" |
| + " each forced context switch."), |
| Flag.baseFeature(AccessibilityFeatures.ABLATE_SEND_PENDING_ACCESSIBILITY_EVENTS, |
| "Enable to increase the cost of SendPendingAccessibilityEvents"), |
| Flag.baseFeature(BlinkFeatures.RUN_TEXT_INPUT_UPDATE_POST_LIFECYCLE, |
| "Runs code to update IME state at the end of a lifecycle update " |
| + "rather than the beginning."), |
| Flag.baseFeature(CcFeatures.NON_BLOCKING_COMMIT, |
| "Don't block the renderer main thread unconditionally while waiting " |
| + "for commit to finish on the compositor thread."), |
| Flag.baseFeature(CcFeatures.USE_DMSAA_FOR_TILES, |
| "Switches skia to use DMSAA instead of MSAA for tile raster"), |
| Flag.baseFeature(BlinkFeatures.CSS_PAINTING_FOR_SPELLING_GRAMMAR_ERRORS, |
| "Use the new CSS-based painting for spelling and grammar errors"), |
| Flag.baseFeature(BlinkFeatures.WEB_RTC_ENCODER_ASYNC_ENCODE, |
| "Make RTCVideoEncoder encode call asynchronous."), |
| Flag.baseFeature(BlinkFeatures.WEB_RTC_INITIALIZE_ENCODER_ON_FIRST_FRAME, |
| "Initialize VideoEncodeAccelerator on the first encode."), |
| Flag.baseFeature(BlinkFeatures.WEB_RTC_METRONOME, |
| "Inject a metronome into webrtc to allow task coalescing, " |
| + " including synchronized decoding."), |
| Flag.baseFeature(BlinkFeatures.FAST_PATH_PAINT_PROPERTY_UPDATES, |
| "If enabled, some paint property updates (e.g., transform " |
| + "changes) will be applied directly instead of " |
| + "using the property tree builder."), |
| Flag.baseFeature(BlinkFeatures.THREADED_BODY_LOADER, |
| "If enabled, reads and decodes navigation body data off the main thread."), |
| Flag.baseFeature(BlinkFeatures.SVG_RASTER_OPTIMIZATIONS), |
| Flag.baseFeature(BlinkFeatures.COMPOSITE_BACKGROUND_ATTACHMENT_FIXED), |
| Flag.baseFeature(BlinkFeatures.COMPOSITE_SCROLL_AFTER_PAINT), |
| Flag.baseFeature(BlinkFeatures.DELAY_OUT_OF_VIEWPORT_LAZY_IMAGES, |
| "Delays out-of-viewport lazy loaded images."), |
| Flag.baseFeature(BlinkFeatures.SEND_MOUSE_EVENTS_DISABLED_FORM_CONTROLS, |
| "This changes event propagation for disabled form controls."), |
| Flag.baseFeature(ContentFeatures.SURFACE_SYNC_FULLSCREEN_KILLSWITCH, |
| "Disable to turn off the new SurfaceSync Fullscreen path."), |
| Flag.baseFeature(ContentFeatures.PERSISTENT_ORIGIN_TRIALS, |
| "If enabled, servers will be able to use persistent origin trials " |
| + "on this device."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_IMAGE_DRAG, |
| "If enabled, images can be dragged out from Webview"), |
| Flag.baseFeature(BlinkFeatures.WEB_RTC_COMBINED_NETWORK_AND_WORKER_THREAD, |
| "Combines WebRTC's worker thread and network thread onto a single thread."), |
| Flag.baseFeature(BlinkFeatures.V_SYNC_DECODING, |
| "Runs the WebRTC metronome off the VSync signal."), |
| Flag.baseFeature(BlinkFeatures.WEB_RTC_SEND_PACKET_BATCH, |
| "Sends outgoing WebRTC Video RTP packets in batches."), |
| Flag.baseFeature(ContentSwitches.DISABLE_DOMAIN_BLOCKING_FOR3DAP_IS, |
| "Disable the per-domain blocking for 3D APIs after GPU reset. " |
| + "This switch is intended only for tests."), |
| Flag.baseFeature(MetricsFeatures.METRICS_SERVICE_ALLOW_EARLY_LOG_CLOSE, |
| "Controls whether a log is allowed to be closed when Chrome" |
| + " is backgrounded/foregrounded early."), |
| Flag.baseFeature(MetricsFeatures.METRICS_CLEAR_LOGS_ON_CLONED_INSTALL, |
| "Controls whether UMA logs are cleared when a cloned " |
| + "install is detected."), |
| Flag.baseFeature(MetricsFeatures.REPORTING_SERVICE_FLUSH_PREFS_ON_UPLOAD_IN_BACKGROUND, |
| "Controls whether we immediately flush Local State after " |
| + "uploading a UMA log while in background."), |
| Flag.baseFeature(MetricsFeatures.SUBPROCESS_METRICS_PROVIDER_LEAKY, |
| "Whether SubprocessMetricsProvider should be leaky, so that it can listen " |
| + "to subprocesses exiting even after the MetricsService has been " |
| + "destroyed."), |
| Flag.baseFeature(ContentFeatures.MAIN_THREAD_COMPOSITING_PRIORITY, |
| "When enabled runs the main thread at compositing priority."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_UMA_UPLOAD_QUALITY_OF_SERVICE_SET_TO_DEFAULT, |
| "If enabled, the frequency to upload UMA is increased."), |
| Flag.baseFeature("CanvasColorCache"), |
| Flag.baseFeature(AwFeatures.WEBVIEW_RESTRICT_SENSITIVE_CONTENT, |
| "Controls whether access to sensitive web content should be restricted."), |
| Flag.baseFeature(BlinkFeatures.KEYBOARD_FOCUSABLE_SCROLLERS, |
| "When enabled, can focus on a scroller element using the keyboard."), |
| Flag.commandLine(AwSwitches.WEBVIEW_ENABLE_TRUST_TOKENS_COMPONENT, |
| "Enables downloading TrustTokenKeyCommitmentsComponent by the component" |
| + " updater downloading service in nonembedded WebView." |
| + " See https://crbug.com/1170468."), |
| Flag.baseFeature(BlinkFeatures.STYLUS_POINTER_ADJUSTMENT, |
| "When enabled, a hover icon is shown over editable HTML elements when" |
| + " using a stylus and the rectangle to trigger stylus writing on" |
| + " editable elements is expanded."), |
| Flag.baseFeature(BlinkFeatures.STYLUS_RICH_GESTURES, |
| "When enabled, stylus input can be used to draw rich gestures which " |
| + "affect text in editable web content."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_ZOOM_KEYBOARD_SHORTCUTS, |
| "Enables WebView to use zoom keyboard shortcuts on hardware keyboards."), |
| Flag.baseFeature(ContentFeatures.PRIVACY_SANDBOX_ADS_AP_IS_OVERRIDE, |
| "When enabled, the following ads APIs will be available: Attribution Reporting," |
| + "FLEDGE, Topics."), |
| Flag.baseFeature(BlinkFeatures.RENDER_BLOCKING_FONTS, |
| "When enabled, blocks rendering on font preloads to reduce CLS. " |
| + "See go/critical-font-analysis"), |
| Flag.baseFeature(AwFeatures.WEBVIEW_SERVER_SIDE_SAMPLING, |
| "If enabled, the client side sampling for user metrics will be turned off." |
| + " This has no effect if metrics reporting is disabled"), |
| Flag.baseFeature("SafeBrowsingOnUIThread"), |
| Flag.baseFeature(BlinkFeatures.ANDROID_EXTENDED_KEYBOARD_SHORTCUTS, |
| "Enables WebView to use the extended keyboard shortcuts added for Android U"), |
| Flag.baseFeature("LessChattyNetworkService"), |
| Flag.baseFeature(BlinkFeatures.AUTOFILL_DETECT_REMOVED_FORM_CONTROLS, |
| "Enables Autofill to detect if form controls are removed from the DOM"), |
| Flag.baseFeature( |
| NetFeatures.PARTITIONED_COOKIES, "Enables the Partitioned cookie attribute"), |
| Flag.baseFeature(NetFeatures.SUPPORT_PARTITIONED_BLOB_URL, |
| "Enables the new Blob URL implementation needed for third-party storage" |
| + " partitioning"), |
| Flag.baseFeature(NetFeatures.THIRD_PARTY_STORAGE_PARTITIONING, |
| "Enables partitioning of third-party storage by top-level site. " |
| + "Note: this is under active development and may result in unexpected " |
| + "behavior. Please file bugs at https://bugs.chromium.org/p/chromium/issues/" |
| + "entry?labels=StoragePartitioning-trial-bugs&components=Blink%3EStorage."), |
| Flag.baseFeature( |
| NetFeatures.ASYNC_QUIC_SESSION, "Enables asynchronous QUIC session creation"), |
| Flag.baseFeature(BaseFeatures.CRASH_BROWSER_ON_CHILD_MISMATCH_IF_BROWSER_CHANGED, |
| "Causes the browser process to crash if child processes are failing to launch" |
| + " due to a browser version change."), |
| Flag.baseFeature(BlinkFeatures.NEW_BASE_URL_INHERITANCE_BEHAVIOR, |
| "Enables the new base-url inheritance behavior for about:blank and " |
| + "about:srcdoc pages loaded in a webview."), |
| Flag.baseFeature("MojoIpcz"), |
| Flag.baseFeature(TracingServiceFeatures.ENABLE_PERFETTO_SYSTEM_TRACING, |
| "When enabled, WebView exports trace events to the Android Perfetto service." |
| + " This works only for Android Q+."), |
| Flag.baseFeature(AwFeatures.WEBVIEW_SAFE_BROWSING_SAFE_MODE, |
| "Enable doing a JNI call to check safe browsing safe mode status " |
| + "before doing a safe browsing check."), |
| Flag.baseFeature(UiAndroidFeatures.CONVERT_TRACKPAD_EVENTS_TO_MOUSE, |
| "Enables converting trackpad click gestures to mouse events" |
| + " in order for them to be interpreted similar to a desktop" |
| + " experience (i.e. double-click to select word.)"), |
| Flag.baseFeature(NetworkServiceFeatures.ATTRIBUTION_REPORTING_CROSS_APP_WEB, |
| "Enable attribution reporting to cross the app/web barrier by letting " |
| + "the WebView use OS-level attribution."), |
| Flag.baseFeature(BaseFeatures.THREAD_POOL_CAP, |
| "Reduces the thread pool cap to use less threads"), |
| Flag.baseFeature(BlinkFeatures.BEFOREUNLOAD_EVENT_CANCEL_BY_PREVENT_DEFAULT, |
| "Enables showing the cancel dialog by calling preventDefault() " |
| + "on beforeunload event."), |
| Flag.baseFeature(ContentFeatures.QUEUE_NAVIGATIONS_WHILE_WAITING_FOR_COMMIT, |
| "If enabled, allows navigations to be queued when there is " |
| + "an existing pending commit navigation in progress."), |
| Flag.baseFeature("NetworkServiceCookiesHighPriorityTaskRunner"), |
| // Add new commandline switches and features above. The final entry should have a |
| // trailing comma for cleaner diffs. |
| }; |
| } |
