src/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   // Crosswalk supports the Web Notification API on Android.
  48   WebRuntimeFeatures::enableNotifications(true);
  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 #if defined(OS_TIZEN)
  82   WebRuntimeFeatures::enableOrientationEvent(true);
  83 #endif  // defined(OS_TIZEN)
  84 }
  85
  86 void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
  87     const base::CommandLine& command_line) {
  88   if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
  89     WebRuntimeFeatures::enableExperimentalFeatures(true);
  90
  91   SetRuntimeFeatureDefaultsForPlatform();
  92
  93   if (command_line.HasSwitch(switches::kDisableDatabases))
  94     WebRuntimeFeatures::enableDatabase(false);
  95
  96   if (command_line.HasSwitch(switches::kDisableApplicationCache))
  97     WebRuntimeFeatures::enableApplicationCache(false);
  98
  99   if (command_line.HasSwitch(switches::kDisableBlinkScheduler))
 100     WebRuntimeFeatures::enableBlinkScheduler(false);
 101
 102   if (command_line.HasSwitch(switches::kDisableLocalStorage))
 103     WebRuntimeFeatures::enableLocalStorage(false);
 104
 105   if (command_line.HasSwitch(switches::kDisableSessionStorage))
 106     WebRuntimeFeatures::enableSessionStorage(false);
 107
 108   if (command_line.HasSwitch(switches::kDisableMediaSource))
 109     WebRuntimeFeatures::enableMediaSource(false);
 110
 111   if (command_line.HasSwitch(switches::kDisableSharedWorkers))
 112     WebRuntimeFeatures::enableSharedWorker(false);
 113
 114 #if defined(OS_ANDROID)
 115   if (command_line.HasSwitch(switches::kDisableWebRTC))
 116     WebRuntimeFeatures::enablePeerConnection(false);
 117
 118   if (!command_line.HasSwitch(switches::kEnableSpeechRecognition))
 119     WebRuntimeFeatures::enableScriptedSpeech(false);
 120
 121   if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
 122     WebRuntimeFeatures::enableNotifications(true);
 123
 124   // WebAudio is enabled by default on ARM and X86, if the MediaCodec
 125   // API is available.
 126   WebRuntimeFeatures::enableWebAudio(
 127       !command_line.HasSwitch(switches::kDisableWebAudio) &&
 128       media::MediaCodecBridge::IsAvailable());
 129 #else
 130   if (command_line.HasSwitch(switches::kDisableWebAudio))
 131     WebRuntimeFeatures::enableWebAudio(false);
 132 #endif
 133
 134   if (command_line.HasSwitch(switches::kEnableEncryptedMedia))
 135     WebRuntimeFeatures::enableEncryptedMedia(true);
 136
 137   if (command_line.HasSwitch(switches::kDisablePrefixedEncryptedMedia))
 138     WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
 139
 140   if (command_line.HasSwitch(switches::kEnableWebMIDI))
 141     WebRuntimeFeatures::enableWebMIDI(true);
 142
 143   if (command_line.HasSwitch(switches::kDisableFileSystem))
 144     WebRuntimeFeatures::enableFileSystem(false);
 145
 146   if (command_line.HasSwitch(switches::kEnableExperimentalCanvasFeatures))
 147     WebRuntimeFeatures::enableExperimentalCanvasFeatures(true);
 148
 149   if (command_line.HasSwitch(switches::kEnableAcceleratedJpegDecoding))
 150     WebRuntimeFeatures::enableDecodeToYUV(true);
 151
 152   if (command_line.HasSwitch(switches::kDisableDisplayList2dCanvas)) {
 153     WebRuntimeFeatures::enableDisplayList2dCanvas(false);
 154   } else if (command_line.HasSwitch(switches::kEnableDisplayList2dCanvas)) {
 155     WebRuntimeFeatures::enableDisplayList2dCanvas(true);
 156   } else {
 157     WebRuntimeFeatures::enableDisplayList2dCanvas(
 158         base::FieldTrialList::FindFullName("DisplayList2dCanvas") == "Enabled"
 159     );
 160   }
 161
 162   if (command_line.HasSwitch(switches::kEnableWebGLDraftExtensions))
 163     WebRuntimeFeatures::enableWebGLDraftExtensions(true);
 164
 165   if (command_line.HasSwitch(switches::kEnableWebGLImageChromium))
 166     WebRuntimeFeatures::enableWebGLImageChromium(true);
 167
 168   if (command_line.HasSwitch(switches::kEnableOverlayFullscreenVideo))
 169     WebRuntimeFeatures::enableOverlayFullscreenVideo(true);
 170
 171   if (ui::IsOverlayScrollbarEnabled())
 172     WebRuntimeFeatures::enableOverlayScrollbars(true);
 173
 174   if (command_line.HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths))
 175     WebRuntimeFeatures::enableBleedingEdgeFastPaths(true);
 176
 177   if (command_line.HasSwitch(switches::kEnablePreciseMemoryInfo))
 178     WebRuntimeFeatures::enablePreciseMemoryInfo(true);
 179
 180   if (command_line.HasSwitch(switches::kEnableLayerSquashing))
 181     WebRuntimeFeatures::enableLayerSquashing(true);
 182
 183   if (command_line.HasSwitch(switches::kEnableNetworkInformation) ||
 184       command_line.HasSwitch(
 185           switches::kEnableExperimentalWebPlatformFeatures)) {
 186     WebRuntimeFeatures::enableNetworkInformation(true);
 187   }
 188
 189   if (command_line.HasSwitch(switches::kEnableCredentialManagerAPI))
 190     WebRuntimeFeatures::enableCredentialManagerAPI(true);
 191
 192   if (command_line.HasSwitch(switches::kEnableViewport))
 193     WebRuntimeFeatures::enableCSSViewport(true);
 194
 195   if (command_line.HasSwitch(switches::kDisableSVG1DOM)) {
 196     WebRuntimeFeatures::enableSVG1DOM(false);
 197   }
 198 }
 199
 200 }  // namespace content