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 supports gamepad API for JellyBean and beyond
  46   WebRuntimeFeatures::enableGamepad(
  47       base::android::BuildInfo::GetInstance()->sdk_int() >= 16);
  48   // Android does not have support for PagePopup
  49   WebRuntimeFeatures::enablePagePopup(false);
  50   // Android does not yet support the Web Notification API. crbug.com/115320
  51   WebRuntimeFeatures::enableNotifications(false);
  52   // Android does not yet support SharedWorker. crbug.com/154571
  53   WebRuntimeFeatures::enableSharedWorker(false);
  54   // Android does not yet support NavigatorContentUtils.
  55   WebRuntimeFeatures::enableNavigatorContentUtils(false);
  56   WebRuntimeFeatures::enableTouchIconLoading(true);
  57   WebRuntimeFeatures::enableOrientationEvent(true);
  58   WebRuntimeFeatures::enableFastMobileScrolling(true);
  59   WebRuntimeFeatures::enableMediaCapture(true);
  60   // If navigation transitions gets activated via field trial, enable it in
  61   // blink. We don't set this to false in case the user has manually enabled
  62   // the feature via experimental web platform features.
  63   if (base::FieldTrialList::FindFullName("NavigationTransitions") == "Enabled")
  64     WebRuntimeFeatures::enableNavigationTransitions(true);
  65 #else
  66   WebRuntimeFeatures::enableNavigatorContentUtils(true);
  67 #endif  // defined(OS_ANDROID)
  68
  69 #if !(defined OS_ANDROID || defined OS_CHROMEOS || defined OS_IOS)
  70     // Only Android, ChromeOS, and IOS support NetInfo right now.
  71     WebRuntimeFeatures::enableNetworkInformation(false);
  72 #endif
  73
  74 #if defined(OS_WIN)
  75   // Screen Orientation API is currently broken on Windows 8 Metro mode and
  76   // until we can find how to disable it only for Blink instances running in a
  77   // renderer process in Metro, we need to disable the API altogether for Win8.
  78   // See http://crbug.com/400846
  79   if (base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_WIN8)
  80     WebRuntimeFeatures::enableScreenOrientation(false);
  81 #endif // OS_WIN
  82 }
  83
  84 void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
  85     const base::CommandLine& command_line) {
  86   if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
  87     WebRuntimeFeatures::enableExperimentalFeatures(true);
  88
  89   SetRuntimeFeatureDefaultsForPlatform();
  90
  91   if (command_line.HasSwitch(switches::kDisableDatabases))
  92     WebRuntimeFeatures::enableDatabase(false);
  93
  94   if (command_line.HasSwitch(switches::kDisableApplicationCache))
  95     WebRuntimeFeatures::enableApplicationCache(false);
  96
  97   if (command_line.HasSwitch(switches::kDisableDesktopNotifications))
  98     WebRuntimeFeatures::enableNotifications(false);
  99
 100   if (command_line.HasSwitch(switches::kDisableLocalStorage))
 101     WebRuntimeFeatures::enableLocalStorage(false);
 102
 103   if (command_line.HasSwitch(switches::kDisableSessionStorage))
 104     WebRuntimeFeatures::enableSessionStorage(false);
 105
 106   if (command_line.HasSwitch(switches::kDisableMediaSource))
 107     WebRuntimeFeatures::enableMediaSource(false);
 108
 109   if (command_line.HasSwitch(switches::kDisableSharedWorkers))
 110     WebRuntimeFeatures::enableSharedWorker(false);
 111
 112 #if defined(OS_ANDROID)
 113   if (command_line.HasSwitch(switches::kDisableWebRTC)) {
 114     WebRuntimeFeatures::enableMediaStream(false);
 115     WebRuntimeFeatures::enablePeerConnection(false);
 116   }
 117
 118   if (!command_line.HasSwitch(switches::kEnableSpeechRecognition))
 119     WebRuntimeFeatures::enableScriptedSpeech(false);
 120
 121   // WebAudio is enabled by default on ARM and X86, if the MediaCodec
 122   // API is available.
 123   WebRuntimeFeatures::enableWebAudio(
 124       !command_line.HasSwitch(switches::kDisableWebAudio) &&
 125       media::MediaCodecBridge::IsAvailable());
 126 #else
 127   if (command_line.HasSwitch(switches::kDisableWebAudio))
 128     WebRuntimeFeatures::enableWebAudio(false);
 129 #endif
 130
 131   if (command_line.HasSwitch(switches::kEnableEncryptedMedia))
 132     WebRuntimeFeatures::enableEncryptedMedia(true);
 133
 134   if (command_line.HasSwitch(switches::kDisablePrefixedEncryptedMedia))
 135     WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
 136
 137   if (command_line.HasSwitch(switches::kEnableWebMIDI))
 138     WebRuntimeFeatures::enableWebMIDI(true);
 139
 140   if (command_line.HasSwitch(switches::kDisableFileSystem))
 141     WebRuntimeFeatures::enableFileSystem(false);
 142
 143   if (command_line.HasSwitch(switches::kEnableExperimentalCanvasFeatures))
 144     WebRuntimeFeatures::enableExperimentalCanvasFeatures(true);
 145
 146   if (command_line.HasSwitch(switches::kDisableDisplayList2dCanvas)) {
 147     WebRuntimeFeatures::enableDisplayList2dCanvas(false);
 148   } else if (command_line.HasSwitch(switches::kEnableDisplayList2dCanvas)) {
 149     WebRuntimeFeatures::enableDisplayList2dCanvas(true);
 150   } else {
 151     WebRuntimeFeatures::enableDisplayList2dCanvas(
 152         base::FieldTrialList::FindFullName("DisplayList2dCanvas") == "Enabled"
 153     );
 154   }
 155
 156   if (command_line.HasSwitch(switches::kEnableWebGLDraftExtensions))
 157     WebRuntimeFeatures::enableWebGLDraftExtensions(true);
 158
 159   if (command_line.HasSwitch(switches::kEnableWebGLImageChromium))
 160     WebRuntimeFeatures::enableWebGLImageChromium(true);
 161
 162   if (command_line.HasSwitch(switches::kEnableOverlayFullscreenVideo))
 163     WebRuntimeFeatures::enableOverlayFullscreenVideo(true);
 164
 165   if (ui::IsOverlayScrollbarEnabled())
 166     WebRuntimeFeatures::enableOverlayScrollbars(true);
 167
 168   if (command_line.HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths))
 169     WebRuntimeFeatures::enableBleedingEdgeFastPaths(true);
 170
 171   if (command_line.HasSwitch(switches::kEnablePreciseMemoryInfo))
 172     WebRuntimeFeatures::enablePreciseMemoryInfo(true);
 173
 174   if (command_line.HasSwitch(switches::kEnableLayerSquashing))
 175     WebRuntimeFeatures::enableLayerSquashing(true);
 176
 177   if (command_line.HasSwitch(switches::kEnableNetworkInformation) ||
 178       command_line.HasSwitch(
 179           switches::kEnableExperimentalWebPlatformFeatures)) {
 180     WebRuntimeFeatures::enableNetworkInformation(true);
 181   }
 182 }
 183
 184 }  // namespace content