runtime_features.cc revision 116680a4aac90f2aa7413d9095a592090648e557 
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 "content/common/content_switches_internal.h"
9#include "content/public/common/content_switches.h"
10#include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
11#include "ui/native_theme/native_theme_switches.h"
12
13#if defined(OS_ANDROID)
14#include <cpu-features.h>
15#include "base/android/build_info.h"
16#include "media/base/android/media_codec_bridge.h"
17#endif
18
19using blink::WebRuntimeFeatures;
20
21namespace content {
22
23static void SetRuntimeFeatureDefaultsForPlatform() {
24#if defined(OS_ANDROID)
25  // MSE/EME implementation needs Android MediaCodec API.
26  if (!media::MediaCodecBridge::IsAvailable()) {
27    WebRuntimeFeatures::enableMediaSource(false);
28    WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
29    WebRuntimeFeatures::enableEncryptedMedia(false);
30  }
31  // WebAudio is enabled by default but only when the MediaCodec API
32  // is available.
33  AndroidCpuFamily cpu_family = android_getCpuFamily();
34  WebRuntimeFeatures::enableWebAudio(
35      media::MediaCodecBridge::IsAvailable() &&
36      ((cpu_family == ANDROID_CPU_FAMILY_ARM) ||
37       (cpu_family == ANDROID_CPU_FAMILY_ARM64) ||
38       (cpu_family == ANDROID_CPU_FAMILY_X86) ||
39       (cpu_family == ANDROID_CPU_FAMILY_MIPS)));
40
41  // Android supports gamepad API for JellyBean and beyond
42  WebRuntimeFeatures::enableGamepad(
43      base::android::BuildInfo::GetInstance()->sdk_int() >= 16);
44  // Android does not have support for PagePopup
45  WebRuntimeFeatures::enablePagePopup(false);
46  // Android does not yet support the Web Notification API. crbug.com/115320
47  WebRuntimeFeatures::enableNotifications(false);
48  // Android does not yet support SharedWorker. crbug.com/154571
49  WebRuntimeFeatures::enableSharedWorker(false);
50  // Android does not yet support NavigatorContentUtils.
51  WebRuntimeFeatures::enableNavigatorContentUtils(false);
52  WebRuntimeFeatures::enableTouchIconLoading(true);
53  WebRuntimeFeatures::enableOrientationEvent(true);
54  WebRuntimeFeatures::enableFastMobileScrolling(true);
55  WebRuntimeFeatures::enableMediaCapture(true);
56#else
57  WebRuntimeFeatures::enableNavigatorContentUtils(true);
58#endif  // defined(OS_ANDROID)
59}
60
61void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
62    const CommandLine& command_line) {
63  if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
64    WebRuntimeFeatures::enableExperimentalFeatures(true);
65
66  SetRuntimeFeatureDefaultsForPlatform();
67
68  if (command_line.HasSwitch(switches::kDisableDatabases))
69    WebRuntimeFeatures::enableDatabase(false);
70
71  if (command_line.HasSwitch(switches::kDisableApplicationCache))
72    WebRuntimeFeatures::enableApplicationCache(false);
73
74  if (command_line.HasSwitch(switches::kDisableDesktopNotifications))
75    WebRuntimeFeatures::enableNotifications(false);
76
77  if (command_line.HasSwitch(switches::kDisableLocalStorage))
78    WebRuntimeFeatures::enableLocalStorage(false);
79
80  if (command_line.HasSwitch(switches::kDisableSessionStorage))
81    WebRuntimeFeatures::enableSessionStorage(false);
82
83  if (command_line.HasSwitch(switches::kDisableMediaSource))
84    WebRuntimeFeatures::enableMediaSource(false);
85
86  if (command_line.HasSwitch(switches::kDisableSharedWorkers))
87    WebRuntimeFeatures::enableSharedWorker(false);
88
89#if defined(OS_ANDROID)
90  if (command_line.HasSwitch(switches::kDisableWebRTC)) {
91    WebRuntimeFeatures::enableMediaStream(false);
92    WebRuntimeFeatures::enablePeerConnection(false);
93  }
94
95  if (!command_line.HasSwitch(switches::kEnableSpeechRecognition))
96    WebRuntimeFeatures::enableScriptedSpeech(false);
97
98  // WebAudio is enabled by default on ARM and X86, if the MediaCodec
99  // API is available.
100  WebRuntimeFeatures::enableWebAudio(
101      !command_line.HasSwitch(switches::kDisableWebAudio) &&
102      media::MediaCodecBridge::IsAvailable());
103#else
104  if (command_line.HasSwitch(switches::kDisableWebAudio))
105    WebRuntimeFeatures::enableWebAudio(false);
106#endif
107
108  if (command_line.HasSwitch(switches::kEnableEncryptedMedia))
109    WebRuntimeFeatures::enableEncryptedMedia(true);
110
111  if (command_line.HasSwitch(switches::kDisablePrefixedEncryptedMedia))
112    WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
113
114  if (command_line.HasSwitch(switches::kEnableWebAnimationsSVG))
115    WebRuntimeFeatures::enableWebAnimationsSVG(true);
116
117  if (command_line.HasSwitch(switches::kEnableWebMIDI))
118    WebRuntimeFeatures::enableWebMIDI(true);
119
120  if (command_line.HasSwitch(switches::kDisableFileSystem))
121    WebRuntimeFeatures::enableFileSystem(false);
122
123  if (command_line.HasSwitch(switches::kEnableExperimentalCanvasFeatures))
124    WebRuntimeFeatures::enableExperimentalCanvasFeatures(true);
125
126  if (command_line.HasSwitch(switches::kEnableSpeechSynthesis))
127    WebRuntimeFeatures::enableSpeechSynthesis(true);
128
129  if (command_line.HasSwitch(switches::kEnableWebGLDraftExtensions))
130    WebRuntimeFeatures::enableWebGLDraftExtensions(true);
131
132  if (command_line.HasSwitch(switches::kEnableWebGLImageChromium))
133    WebRuntimeFeatures::enableWebGLImageChromium(true);
134
135  if (command_line.HasSwitch(switches::kEnableOverlayFullscreenVideo))
136    WebRuntimeFeatures::enableOverlayFullscreenVideo(true);
137
138  if (ui::IsOverlayScrollbarEnabled())
139    WebRuntimeFeatures::enableOverlayScrollbars(true);
140
141  if (command_line.HasSwitch(switches::kEnableFastTextAutosizing))
142    WebRuntimeFeatures::enableFastTextAutosizing(true);
143
144  if (command_line.HasSwitch(switches::kDisableFastTextAutosizing))
145    WebRuntimeFeatures::enableFastTextAutosizing(false);
146
147  if (command_line.HasSwitch(switches::kEnableTargetedStyleRecalc))
148    WebRuntimeFeatures::enableTargetedStyleRecalc(true);
149
150  if (command_line.HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths))
151    WebRuntimeFeatures::enableBleedingEdgeFastPaths(true);
152
153  if (command_line.HasSwitch(switches::kEnablePreciseMemoryInfo))
154    WebRuntimeFeatures::enablePreciseMemoryInfo(true);
155
156  if (command_line.HasSwitch(switches::kEnableLayerSquashing))
157    WebRuntimeFeatures::enableLayerSquashing(true);
158}
159
160}  // namespace content
161