blob: 18027003071d03188d6d980d46a651a7de67082a [file] [log] [blame]
// Copyright 2018 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.
#include "third_party/blink/public/common/features.h"
#include "build/build_config.h"
namespace blink {
namespace features {
const base::Feature kAutofillPreviewStyleExperiment{
"AutofillPreviewStyleExperiment", base::FEATURE_DISABLED_BY_DEFAULT};
// Enable defer commits a bit to avoid flash.
const base::Feature kAvoidFlashBetweenNavigation{
"AvoidFlashBetweenNavigation", base::FEATURE_DISABLED_BY_DEFAULT};
// Enable eagerly setting up a CacheStorage interface pointer and
// passing it to service workers on startup as an optimization.
const base::Feature kEagerCacheStorageSetupForServiceWorkers{
"EagerCacheStorageSetupForServiceWorkers",
base::FEATURE_ENABLED_BY_DEFAULT};
// Controls the user-specified viewport restriction for GPU Rasterization on
// mobile. See https://crbug.com/899399
const base::Feature kEnableGpuRasterizationViewportRestriction{
"EnableGpuRasterizationViewportRestriction",
base::FEATURE_ENABLED_BY_DEFAULT};
// Controls script streaming.
const base::Feature kScriptStreaming{"ScriptStreaming",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enable FCP++ by experiment. See https://crbug.com/869924
const base::Feature kFirstContentfulPaintPlusPlus{
"FirstContentfulPaintPlusPlus", base::FEATURE_DISABLED_BY_DEFAULT};
// Tracks "jank" from layout objects changing their visual location between
// animation frames (see crbug.com/581518).
const base::Feature kJankTracking{"JankTracking",
base::FEATURE_DISABLED_BY_DEFAULT};
const base::Feature kJankTrackingSweepLine{"JankTrackingSweepLine",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enable a new compositing mode called BlinkGenPropertyTrees where Blink
// generates the compositor property trees. See: https://crbug.com/836884.
const base::Feature kBlinkGenPropertyTrees{"BlinkGenPropertyTrees",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enable LayoutNG.
const base::Feature kLayoutNG{"LayoutNG", base::FEATURE_DISABLED_BY_DEFAULT};
const base::Feature kMixedContentAutoupgrade{"AutoupgradeMixedContent",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enable mojo Blob URL interface and better blob URL lifetime management.
// Can be enabled independently of NetworkService.
const base::Feature kMojoBlobURLs{"MojoBlobURLs",
base::FEATURE_DISABLED_BY_DEFAULT};
// Used to control the collection of anchor element metrics (crbug.com/856683).
// If kNavigationPredictor is enabled, then metrics of anchor elements
// in the first viewport after the page load and the metrics of the clicked
// anchor element will be extracted and recorded. Additionally, navigation
// predictor may preconnect/prefetch to resources/origins to make the
// future navigations faster.
const base::Feature kNavigationPredictor{"NavigationPredictor",
base::FEATURE_DISABLED_BY_DEFAULT};
// Onion souping for all DOMStorage. https://crbug.com/781870
const base::Feature kOnionSoupDOMStorage{"OnionSoupDOMStorage",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enable browser-initiated dedicated worker script loading
// (PlzDedicatedWorker). https://crbug.com/906991
const base::Feature kPlzDedicatedWorker{"PlzDedicatedWorker",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enable Portals. https://crbug.com/865123.
const base::Feature kPortals{"Portals", base::FEATURE_DISABLED_BY_DEFAULT};
// Enable Implicit Root Scroller. https://crbug.com/903260.
const base::Feature kImplicitRootScroller{"ImplicitRootScroller",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables usage of getDisplayMedia() that allows capture of web content, see
// https://crbug.com/865060.
const base::Feature kRTCGetDisplayMedia{"RTCGetDisplayMedia",
base::FEATURE_ENABLED_BY_DEFAULT};
// Changes the default RTCPeerConnection constructor behavior to use Unified
// Plan as the SDP semantics. When the feature is enabled, Unified Plan is used
// unless the default is overridden (by passing {sdpSemantics:'plan-b'} as the
// argument).
const base::Feature kRTCUnifiedPlanByDefault{"RTCUnifiedPlanByDefault",
base::FEATURE_ENABLED_BY_DEFAULT};
// Determines if the SDP attrbute extmap-allow-mixed should be offered by
// default or not. The default value can be overridden by passing
// {offerExtmapAllowMixed:true} as an argument to the RTCPeerConnection
// constructor.
const base::Feature kRTCOfferExtmapAllowMixed{
"RTCOfferExtmapAllowMixed", base::FEATURE_DISABLED_BY_DEFAULT};
// Enables to load the response body through Mojo data pipe passed by
// WebURLLoaderClient::DidStartLoadingResponseBody() instead of
// WebURLLoaderClient::DidReceiveData().
const base::Feature kResourceLoadViaDataPipe{"ResourceLoadViaDataPipe",
base::FEATURE_DISABLED_BY_DEFAULT};
const base::Feature kServiceWorkerImportedScriptUpdateCheck{
"ServiceWorkerImportedScriptUpdateCheck",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables reading a subresource's body data and side data in parallel.
const base::Feature kServiceWorkerParallelSideDataReading{
"ServiceWorkerParallelSideDataReading", base::FEATURE_ENABLED_BY_DEFAULT};
const base::Feature kServiceWorkerAggressiveCodeCache{
"ServiceWorkerAggressiveCodeCache", base::FEATURE_DISABLED_BY_DEFAULT};
// Enable new service worker glue for NetworkService. Can be
// enabled independently of NetworkService.
const base::Feature kServiceWorkerServicification{
"ServiceWorkerServicification", base::FEATURE_ENABLED_BY_DEFAULT};
// Freeze scheduler task queues in background after allowed grace time.
// "stop" is a legacy name.
const base::Feature kStopInBackground {
"stop-in-background",
#if defined(OS_ANDROID)
base::FEATURE_ENABLED_BY_DEFAULT
#else
base::FEATURE_DISABLED_BY_DEFAULT
#endif
};
// Freeze non-timer task queues in background, after allowed grace time.
// "stop" is a legacy name.
const base::Feature kStopNonTimersInBackground {
"stop-non-timers-in-background",
#if defined(OS_ANDROID)
base::FEATURE_ENABLED_BY_DEFAULT
#else
base::FEATURE_DISABLED_BY_DEFAULT
#endif
};
// Enables the site isolated Wasm code cache that is keyed on the resource URL
// and the origin lock of the renderer that is requesting the resource. When
// this flag is enabled, content/GeneratedCodeCache handles code cache requests.
const base::Feature kWasmCodeCache = {"WasmCodeCache",
base::FEATURE_DISABLED_BY_DEFAULT};
// Writable files and native filesystem access. https://crbug.com/853326
const base::Feature kWritableFilesAPI{"WritableFilesAPI",
base::FEATURE_DISABLED_BY_DEFAULT};
// Allows for synchronous XHR requests during page dismissal
const base::Feature kForbidSyncXHRInPageDismissal{
"ForbidSyncXHRInPageDismissal", base::FEATURE_DISABLED_BY_DEFAULT};
const char kAutofillPreviewStyleExperimentBgColorParameterName[] = "bg_color";
const char kAutofillPreviewStyleExperimentColorParameterName[] = "color";
const char kMixedContentAutoupgradeModeParamName[] = "mode";
const char kMixedContentAutoupgradeModeBlockable[] = "blockable";
const char kMixedContentAutoupgradeModeOptionallyBlockable[] =
"optionally-blockable";
// Decodes lossy WebP images to YUV instead of RGBX and stores in this format
// in the image decode cache. See crbug.com/900264 for details on the feature.
const base::Feature kDecodeLossyWebPImagesToYUV{
"DecodeLossyWebPImagesToYUV", base::FEATURE_DISABLED_BY_DEFAULT};
// Use accelerated canvases whenever possible see https://crbug.com/909937
const base::Feature kAlwaysAccelerateCanvas{"AlwaysAccelerateCanvas",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables cache-aware WebFonts loading. See https://crbug.com/570205.
const base::Feature kWebFontsCacheAwareTimeoutAdaption{
"WebFontsCacheAwareTimeoutAdaption", base::FEATURE_ENABLED_BY_DEFAULT};
} // namespace features
} // namespace blink