content/child/runtime_features.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/child/runtime_features.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/metrics/field_trial.h"
   9 #include "content/common/content_switches_internal.h"
  10 #include "content/public/common/content_switches.h"
  11 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
  12 #include "ui/native_theme/native_theme_switches.h"
  13
  14 #if defined(OS_ANDROID)
  15 #include <cpu-features.h>
  16 #include "base/android/build_info.h"
  17 #include "base/metrics/field_trial.h"
  18 #include "media/base/android/media_codec_bridge.h"
  19 #elif defined(OS_WIN)
  20 #include "base/win/windows_version.h"
  21 #endif
  22
  23 using blink::WebRuntimeFeatures;
  24
  25 namespace content {
  26
  27 static void SetRuntimeFeatureDefaultsForPlatform() {
  28 #if defined(OS_ANDROID)
  29   // MSE/EME implementation needs Android MediaCodec API.
  30   if (!media::MediaCodecBridge::IsAvailable()) {
  31     WebRuntimeFeatures::enableMediaSource(false);
  32     WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
  33     WebRuntimeFeatures::enableEncryptedMedia(false);
  34   }
  35   // WebAudio is enabled by default but only when the MediaCodec API
  36   // is available.
  37   AndroidCpuFamily cpu_family = android_getCpuFamily();
  38   WebRuntimeFeatures::enableWebAudio(
  39       media::MediaCodecBridge::IsAvailable() &&
  40       ((cpu_family == ANDROID_CPU_FAMILY_ARM) ||
  41        (cpu_family == ANDROID_CPU_FAMILY_ARM64) ||
  42        (cpu_family == ANDROID_CPU_FAMILY_X86) ||
  43        (cpu_family == ANDROID_CPU_FAMILY_MIPS)));
  44
  45   // Android does not have support for PagePopup
  46   WebRuntimeFeatures::enablePagePopup(false);
  47   // Android does not yet support the Web Notification API. crbug.com/115320
  48   WebRuntimeFeatures::enableNotifications(false);
  49   // Android does not yet support SharedWorker. crbug.com/154571
  50   WebRuntimeFeatures::enableSharedWorker(false);
  51   // Android does not yet support NavigatorContentUtils.
  52   WebRuntimeFeatures::enableNavigatorContentUtils(false);
  53   WebRuntimeFeatures::enableTouchIconLoading(true);
  54   WebRuntimeFeatures::enableOrientationEvent(true);
  55   WebRuntimeFeatures::enableFastMobileScrolling(true);
  56   WebRuntimeFeatures::enableMediaCapture(true);
  57   WebRuntimeFeatures::enableCompositedSelectionUpdate(true);
  58   // If navigation transitions gets activated via field trial, enable it in
  59   // blink. We don't set this to false in case the user has manually enabled
  60   // the feature via experimental web platform features.
  61   if (base::FieldTrialList::FindFullName("NavigationTransitions") == "Enabled")
  62     WebRuntimeFeatures::enableNavigationTransitions(true);
  63 #else
  64   WebRuntimeFeatures::enableNavigatorContentUtils(true);
  65 #endif  // defined(OS_ANDROID)
  66
  67 #if !(defined OS_ANDROID || defined OS_CHROMEOS || defined OS_IOS)
  68     // Only Android, ChromeOS, and IOS support NetInfo right now.
  69     WebRuntimeFeatures::enableNetworkInformation(false);
  70 #endif
  71
  72 #if defined(OS_WIN)
  73   // Screen Orientation API is currently broken on Windows 8 Metro mode and
  74   // until we can find how to disable it only for Blink instances running in a
  75   // renderer process in Metro, we need to disable the API altogether for Win8.
  76   // See http://crbug.com/400846
  77   if (base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_WIN8)
  78     WebRuntimeFeatures::enableScreenOrientation(false);
  79 #endif // OS_WIN
  80 }
  81
  82 void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
  83     const base::CommandLine& command_line) {
  84   if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
  85     WebRuntimeFeatures::enableExperimentalFeatures(true);
  86
  87   SetRuntimeFeatureDefaultsForPlatform();
  88
  89   if (command_line.HasSwitch(switches::kDisableDatabases))
  90     WebRuntimeFeatures::enableDatabase(false);
  91
  92   if (command_line.HasSwitch(switches::kDisableApplicationCache))
  93     WebRuntimeFeatures::enableApplicationCache(false);
  94
  95   if (command_line.HasSwitch(switches::kDisableBlinkScheduler))
  96     WebRuntimeFeatures::enableBlinkScheduler(false);
  97
  98   if (command_line.HasSwitch(switches::kDisableLocalStorage))
  99     WebRuntimeFeatures::enableLocalStorage(false);
 100
 101   if (command_line.HasSwitch(switches::kDisableSessionStorage))
 102     WebRuntimeFeatures::enableSessionStorage(false);
 103
 104   if (command_line.HasSwitch(switches::kDisableMediaSource))
 105     WebRuntimeFeatures::enableMediaSource(false);
 106
 107   if (command_line.HasSwitch(switches::kDisableSharedWorkers))
 108     WebRuntimeFeatures::enableSharedWorker(false);
 109
 110 #if defined(OS_ANDROID)
 111   if (command_line.HasSwitch(switches::kDisableWebRTC))
 112     WebRuntimeFeatures::enablePeerConnection(false);
 113
 114   if (!command_line.HasSwitch(switches::kEnableSpeechRecognition))
 115     WebRuntimeFeatures::enableScriptedSpeech(false);
 116
 117   if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
 118     WebRuntimeFeatures::enableNotifications(true);
 119
 120   // WebAudio is enabled by default on ARM and X86, if the MediaCodec
 121   // API is available.
 122   WebRuntimeFeatures::enableWebAudio(
 123       !command_line.HasSwitch(switches::kDisableWebAudio) &&
 124       media::MediaCodecBridge::IsAvailable());
 125 #else
 126   if (command_line.HasSwitch(switches::kDisableWebAudio))
 127     WebRuntimeFeatures::enableWebAudio(false);
 128 #endif
 129
 130   if (command_line.HasSwitch(switches::kEnableEncryptedMedia))
 131     WebRuntimeFeatures::enableEncryptedMedia(true);
 132
 133   if (command_line.HasSwitch(switches::kDisablePrefixedEncryptedMedia))
 134     WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
 135
 136   if (command_line.HasSwitch(switches::kEnableWebMIDI))
 137     WebRuntimeFeatures::enableWebMIDI(true);
 138
 139   if (command_line.HasSwitch(switches::kDisableFileSystem))
 140     WebRuntimeFeatures::enableFileSystem(false);
 141
 142   if (command_line.HasSwitch(switches::kEnableExperimentalCanvasFeatures))
 143     WebRuntimeFeatures::enableExperimentalCanvasFeatures(true);
 144
 145   if (!command_line.HasSwitch(switches::kDisableAcceleratedJpegDecoding))
 146     WebRuntimeFeatures::enableDecodeToYUV(true);
 147
 148   if (command_line.HasSwitch(switches::kDisableDisplayList2dCanvas)) {
 149     WebRuntimeFeatures::enableDisplayList2dCanvas(false);
 150   } else if (command_line.HasSwitch(switches::kForceDisplayList2dCanvas)) {
 151     WebRuntimeFeatures::forceDisplayList2dCanvas(true);
 152   } else if (command_line.HasSwitch(switches::kEnableDisplayList2dCanvas)) {
 153     WebRuntimeFeatures::enableDisplayList2dCanvas(true);
 154   } else {
 155     WebRuntimeFeatures::enableDisplayList2dCanvas(
 156         base::FieldTrialList::FindFullName("DisplayList2dCanvas") == "Enabled"
 157     );
 158   }
 159
 160   if (command_line.HasSwitch(switches::kEnableWebGLDraftExtensions))
 161     WebRuntimeFeatures::enableWebGLDraftExtensions(true);
 162
 163   if (command_line.HasSwitch(switches::kEnableWebGLImageChromium))
 164     WebRuntimeFeatures::enableWebGLImageChromium(true);
 165
 166   if (command_line.HasSwitch(switches::kEnableOverlayFullscreenVideo))
 167     WebRuntimeFeatures::enableOverlayFullscreenVideo(true);
 168
 169   if (ui::IsOverlayScrollbarEnabled())
 170     WebRuntimeFeatures::enableOverlayScrollbars(true);
 171
 172   if (command_line.HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths))
 173     WebRuntimeFeatures::enableBleedingEdgeFastPaths(true);
 174
 175   if (command_line.HasSwitch(switches::kEnablePreciseMemoryInfo))
 176     WebRuntimeFeatures::enablePreciseMemoryInfo(true);
 177
 178   if (command_line.HasSwitch(switches::kEnableNetworkInformation) ||
 179       command_line.HasSwitch(
 180           switches::kEnableExperimentalWebPlatformFeatures)) {
 181     WebRuntimeFeatures::enableNetworkInformation(true);
 182   }
 183
 184   if (command_line.HasSwitch(switches::kEnableCredentialManagerAPI))
 185     WebRuntimeFeatures::enableCredentialManagerAPI(true);
 186
 187   if (command_line.HasSwitch(switches::kDisableSVG1DOM)) {
 188     WebRuntimeFeatures::enableSVG1DOM(false);
 189   }
 190
 191   if (command_line.HasSwitch(switches::kReducedReferrerGranularity))
 192     WebRuntimeFeatures::enableReducedReferrerGranularity(true);
 193 }
 194
 195 }  // namespace content