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
23using blink::WebRuntimeFeatures;
24
25namespace content {
26
27static 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
82void 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::kDisableDesktopNotifications))
96    WebRuntimeFeatures::enableNotifications(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  // WebAudio is enabled by default on ARM and X86, if the MediaCodec
118  // API is available.
119  WebRuntimeFeatures::enableWebAudio(
120      !command_line.HasSwitch(switches::kDisableWebAudio) &&
121      media::MediaCodecBridge::IsAvailable());
122#else
123  if (command_line.HasSwitch(switches::kDisableWebAudio))
124    WebRuntimeFeatures::enableWebAudio(false);
125#endif
126
127  if (command_line.HasSwitch(switches::kEnableEncryptedMedia))
128    WebRuntimeFeatures::enableEncryptedMedia(true);
129
130  if (command_line.HasSwitch(switches::kDisablePrefixedEncryptedMedia))
131    WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
132
133  if (command_line.HasSwitch(switches::kEnableWebMIDI))
134    WebRuntimeFeatures::enableWebMIDI(true);
135
136  if (command_line.HasSwitch(switches::kDisableFileSystem))
137    WebRuntimeFeatures::enableFileSystem(false);
138
139  if (command_line.HasSwitch(switches::kEnableExperimentalCanvasFeatures))
140    WebRuntimeFeatures::enableExperimentalCanvasFeatures(true);
141
142  if (command_line.HasSwitch(switches::kEnableAcceleratedJpegDecoding))
143    WebRuntimeFeatures::enableDecodeToYUV(true);
144
145  if (command_line.HasSwitch(switches::kDisableDisplayList2dCanvas)) {
146    WebRuntimeFeatures::enableDisplayList2dCanvas(false);
147  } else if (command_line.HasSwitch(switches::kEnableDisplayList2dCanvas)) {
148    WebRuntimeFeatures::enableDisplayList2dCanvas(true);
149  } else {
150    WebRuntimeFeatures::enableDisplayList2dCanvas(
151        base::FieldTrialList::FindFullName("DisplayList2dCanvas") == "Enabled"
152    );
153  }
154
155  if (command_line.HasSwitch(switches::kEnableWebGLDraftExtensions))
156    WebRuntimeFeatures::enableWebGLDraftExtensions(true);
157
158  if (command_line.HasSwitch(switches::kEnableWebGLImageChromium))
159    WebRuntimeFeatures::enableWebGLImageChromium(true);
160
161  if (command_line.HasSwitch(switches::kEnableOverlayFullscreenVideo))
162    WebRuntimeFeatures::enableOverlayFullscreenVideo(true);
163
164  if (ui::IsOverlayScrollbarEnabled())
165    WebRuntimeFeatures::enableOverlayScrollbars(true);
166
167  if (command_line.HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths))
168    WebRuntimeFeatures::enableBleedingEdgeFastPaths(true);
169
170  if (command_line.HasSwitch(switches::kEnablePreciseMemoryInfo))
171    WebRuntimeFeatures::enablePreciseMemoryInfo(true);
172
173  if (command_line.HasSwitch(switches::kEnableLayerSquashing))
174    WebRuntimeFeatures::enableLayerSquashing(true);
175
176  if (command_line.HasSwitch(switches::kEnableNetworkInformation) ||
177      command_line.HasSwitch(
178          switches::kEnableExperimentalWebPlatformFeatures)) {
179    WebRuntimeFeatures::enableNetworkInformation(true);
180  }
181}
182
183}  // namespace content
184