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 <vector>
   8
   9 #include "base/command_line.h"
  10 #include "base/metrics/field_trial.h"
  11 #include "base/strings/string_split.h"
  12 #include "components/scheduler/common/scheduler_switches.h"
  13 #include "content/common/content_switches_internal.h"
  14 #include "content/public/common/content_switches.h"
  15 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
  16 #include "ui/gl/gl_switches.h"
  17 #include "ui/native_theme/native_theme_switches.h"
  18
  19 #if defined(OS_ANDROID)
  20 #include <cpu-features.h>
  21 #include "base/android/build_info.h"
  22 #include "base/metrics/field_trial.h"
  23 #include "media/base/android/media_codec_bridge.h"
  24 #elif defined(OS_WIN)
  25 #include "base/win/windows_version.h"
  26 #endif
  27
  28 using blink::WebRuntimeFeatures;
  29
  30 namespace content {
  31
  32 static void SetRuntimeFeatureDefaultsForPlatform() {
  33   // Enable non-standard "apple-touch-icon" and "apple-touch-icon-precomposed".
  34   WebRuntimeFeatures::enableTouchIconLoading(true);
  35
  36 #if defined(OS_ANDROID)
  37   // MSE/EME implementation needs Android MediaCodec API.
  38   if (!media::MediaCodecBridge::IsAvailable()) {
  39     WebRuntimeFeatures::enableMediaSource(false);
  40     WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
  41     WebRuntimeFeatures::enableEncryptedMedia(false);
  42   }
  43   // WebAudio is enabled by default but only when the MediaCodec API
  44   // is available.
  45   AndroidCpuFamily cpu_family = android_getCpuFamily();
  46   WebRuntimeFeatures::enableWebAudio(
  47       media::MediaCodecBridge::IsAvailable() &&
  48       ((cpu_family == ANDROID_CPU_FAMILY_ARM) ||
  49        (cpu_family == ANDROID_CPU_FAMILY_ARM64) ||
  50        (cpu_family == ANDROID_CPU_FAMILY_X86) ||
  51        (cpu_family == ANDROID_CPU_FAMILY_MIPS)));
  52
  53   // Android does not have support for PagePopup
  54   WebRuntimeFeatures::enablePagePopup(false);
  55   // Android does not yet support SharedWorker. crbug.com/154571
  56   WebRuntimeFeatures::enableSharedWorker(false);
  57   // Android does not yet support NavigatorContentUtils.
  58   WebRuntimeFeatures::enableNavigatorContentUtils(false);
  59   WebRuntimeFeatures::enableOrientationEvent(true);
  60   WebRuntimeFeatures::enableFastMobileScrolling(true);
  61   WebRuntimeFeatures::enableMediaCapture(true);
  62   WebRuntimeFeatures::enableCompositedSelectionUpdate(true);
  63   // Android won't be able to reliably support non-persistent notifications, the
  64   // intended behavior for which is in flux by itself.
  65   WebRuntimeFeatures::enableNotificationConstructor(false);
  66 #else
  67   WebRuntimeFeatures::enableNavigatorContentUtils(true);
  68 #endif  // defined(OS_ANDROID)
  69
  70 #if !(defined OS_ANDROID || defined OS_CHROMEOS || defined OS_IOS)
  71     // Only Android, ChromeOS, and IOS support NetInfo right now.
  72     WebRuntimeFeatures::enableNetworkInformation(false);
  73 #endif
  74
  75 #if defined(OS_WIN)
  76   // Screen Orientation API is currently broken on Windows 8 Metro mode and
  77   // until we can find how to disable it only for Blink instances running in a
  78   // renderer process in Metro, we need to disable the API altogether for Win8.
  79   // See http://crbug.com/400846
  80   if (base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_WIN8)
  81     WebRuntimeFeatures::enableScreenOrientation(false);
  82 #endif // OS_WIN
  83 }
  84
  85 void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
  86     const base::CommandLine& command_line) {
  87   if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
  88     WebRuntimeFeatures::enableExperimentalFeatures(true);
  89
  90   if (command_line.HasSwitch(switches::kEnableWebBluetooth))
  91     WebRuntimeFeatures::enableWebBluetooth(true);
  92
  93   SetRuntimeFeatureDefaultsForPlatform();
  94
  95   if (command_line.HasSwitch(switches::kDisableDatabases))
  96     WebRuntimeFeatures::enableDatabase(false);
  97
  98   if (command_line.HasSwitch(scheduler::switches::kDisableBlinkScheduler))
  99     WebRuntimeFeatures::enableBlinkScheduler(false);
 100
 101   if (command_line.HasSwitch(switches::kDisableMediaSource))
 102     WebRuntimeFeatures::enableMediaSource(false);
 103
 104   if (command_line.HasSwitch(switches::kDisableNotifications)) {
 105     WebRuntimeFeatures::enableNotifications(false);
 106
 107     // Chrome's Push Messaging implementation relies on Web Notifications.
 108     WebRuntimeFeatures::enablePushMessaging(false);
 109   }
 110
 111   if (command_line.HasSwitch(switches::kDisableSharedWorkers))
 112     WebRuntimeFeatures::enableSharedWorker(false);
 113
 114 #if defined(OS_ANDROID)
 115   // WebAudio is enabled by default on ARM and X86, if the MediaCodec
 116   // API is available.
 117   WebRuntimeFeatures::enableWebAudio(
 118       !command_line.HasSwitch(switches::kDisableWebAudio) &&
 119       media::MediaCodecBridge::IsAvailable());
 120 #else
 121   if (command_line.HasSwitch(switches::kDisableWebAudio))
 122     WebRuntimeFeatures::enableWebAudio(false);
 123 #endif
 124
 125   if (command_line.HasSwitch(switches::kDisableSpeechAPI))
 126     WebRuntimeFeatures::enableScriptedSpeech(false);
 127
 128   if (command_line.HasSwitch(switches::kDisableEncryptedMedia))
 129     WebRuntimeFeatures::enableEncryptedMedia(false);
 130
 131   if (command_line.HasSwitch(switches::kDisablePrefixedEncryptedMedia))
 132     WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
 133
 134   if (command_line.HasSwitch(switches::kDisableFileSystem))
 135     WebRuntimeFeatures::enableFileSystem(false);
 136
 137   if (command_line.HasSwitch(switches::kEnableExperimentalCanvasFeatures))
 138     WebRuntimeFeatures::enableExperimentalCanvasFeatures(true);
 139
 140   if (!command_line.HasSwitch(switches::kDisableAcceleratedJpegDecoding))
 141     WebRuntimeFeatures::enableDecodeToYUV(true);
 142
 143   if (command_line.HasSwitch(switches::kEnableDisplayList2dCanvas))
 144     WebRuntimeFeatures::enableDisplayList2dCanvas(true);
 145
 146   if (command_line.HasSwitch(switches::kDisableDisplayList2dCanvas))
 147     WebRuntimeFeatures::enableDisplayList2dCanvas(false);
 148
 149   if (command_line.HasSwitch(switches::kForceDisplayList2dCanvas))
 150     WebRuntimeFeatures::forceDisplayList2dCanvas(true);
 151
 152   if (command_line.HasSwitch(switches::kEnableWebGLDraftExtensions))
 153     WebRuntimeFeatures::enableWebGLDraftExtensions(true);
 154
 155   if (command_line.HasSwitch(switches::kEnableWebGLImageChromium))
 156     WebRuntimeFeatures::enableWebGLImageChromium(true);
 157
 158   if (command_line.HasSwitch(switches::kEnableOverlayFullscreenVideo))
 159     WebRuntimeFeatures::enableOverlayFullscreenVideo(true);
 160
 161   if (ui::IsOverlayScrollbarEnabled())
 162     WebRuntimeFeatures::enableOverlayScrollbars(true);
 163
 164   if (command_line.HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths))
 165     WebRuntimeFeatures::enableBleedingEdgeFastPaths(true);
 166
 167   if (command_line.HasSwitch(switches::kEnablePreciseMemoryInfo))
 168     WebRuntimeFeatures::enablePreciseMemoryInfo(true);
 169
 170   if (command_line.HasSwitch(switches::kEnableNetworkInformation) ||
 171       command_line.HasSwitch(
 172           switches::kEnableExperimentalWebPlatformFeatures)) {
 173     WebRuntimeFeatures::enableNetworkInformation(true);
 174   }
 175
 176   if (command_line.HasSwitch(switches::kEnableCredentialManagerAPI))
 177     WebRuntimeFeatures::enableCredentialManagerAPI(true);
 178
 179   if (command_line.HasSwitch(switches::kDisableSVG1DOM)) {
 180     WebRuntimeFeatures::enableSVG1DOM(false);
 181   }
 182
 183   if (command_line.HasSwitch(switches::kReducedReferrerGranularity))
 184     WebRuntimeFeatures::enableReducedReferrerGranularity(true);
 185
 186   if (command_line.HasSwitch(switches::kEnablePushMessagePayload))
 187     WebRuntimeFeatures::enablePushMessagingData(true);
 188
 189   if (command_line.HasSwitch(switches::kDisablePermissionsAPI))
 190     WebRuntimeFeatures::enablePermissionsAPI(false);
 191
 192   // Delete "StaleWhileRevalidate" line from chrome_browser_field_trials.cc
 193   // when this experiment is done.
 194   if (base::FieldTrialList::FindFullName("StaleWhileRevalidate") == "Enabled" ||
 195       command_line.HasSwitch(switches::kEnableStaleWhileRevalidate))
 196     WebRuntimeFeatures::enableStaleWhileRevalidateCacheControl(true);
 197
 198   if (command_line.HasSwitch(switches::kDisableV8IdleTasks))
 199     WebRuntimeFeatures::enableV8IdleTasks(false);
 200   else
 201     WebRuntimeFeatures::enableV8IdleTasks(true);
 202
 203   if (command_line.HasSwitch(switches::kEnableUnsafeES3APIs))
 204     WebRuntimeFeatures::enableUnsafeES3APIs(true);
 205
 206   if (command_line.HasSwitch(switches::kEnableWebVR)) {
 207     WebRuntimeFeatures::enableWebVR(true);
 208     WebRuntimeFeatures::enableFeatureFromString("GeometryInterfaces", true);
 209   }
 210
 211   // Enable explicitly enabled features, and then disable explicitly disabled
 212   // ones.
 213   if (command_line.HasSwitch(switches::kEnableBlinkFeatures)) {
 214     std::vector<std::string> enabled_features;
 215     base::SplitString(
 216         command_line.GetSwitchValueASCII(switches::kEnableBlinkFeatures), ',',
 217         &enabled_features);
 218     for (const std::string& feature : enabled_features) {
 219       WebRuntimeFeatures::enableFeatureFromString(
 220           blink::WebString::fromLatin1(feature), true);
 221     }
 222   }
 223   if (command_line.HasSwitch(switches::kDisableBlinkFeatures)) {
 224     std::vector<std::string> disabled_features;
 225     base::SplitString(
 226         command_line.GetSwitchValueASCII(switches::kDisableBlinkFeatures), ',',
 227         &disabled_features);
 228     for (const std::string& feature : disabled_features) {
 229       WebRuntimeFeatures::enableFeatureFromString(
 230           blink::WebString::fromLatin1(feature), false);
 231     }
 232   }
 233 }
 234
 235 }  // namespace content