Disable Screen Orientation API on Win8.

content/child/runtime_features.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/child/runtime_features.h"
 
 #include "base/command_line.h"
 #include "content/common/content_switches_internal.h"
 #include "content/public/common/content_switches.h"
 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
 #include "ui/native_theme/native_theme_switches.h"
 
 #if defined(OS_ANDROID)
 #include <cpu-features.h>
 #include "base/android/build_info.h"
 #include "base/metrics/field_trial.h"
 #include "media/base/android/media_codec_bridge.h"
+#elif defined(OS_WIN)
+#include "base/win/windows_version.h"
 #endif
 
 using blink::WebRuntimeFeatures;
 
 namespace content {
 
 static void SetRuntimeFeatureDefaultsForPlatform() {
 #if defined(OS_ANDROID)
   // MSE/EME implementation needs Android MediaCodec API.
   if (!media::MediaCodecBridge::IsAvailable()) {
@@ skipping 32 matching lines @@
   if (base::FieldTrialList::FindFullName("NavigationTransitions") == "Enabled")
     WebRuntimeFeatures::enableNavigationTransitions(true);
 #else
   WebRuntimeFeatures::enableNavigatorContentUtils(true);
 #endif  // defined(OS_ANDROID)
 
 #if !(defined OS_ANDROID || defined OS_CHROMEOS || defined OS_IOS)
     // Only Android, ChromeOS, and IOS support NetInfo right now.
     WebRuntimeFeatures::enableNetworkInformation(false);
 #endif
+
+#if defined(OS_WIN)
+  // Screen Orientation API is currently broken on Windows 8 Metro mode and
+  // until we can find how to disable it only for Blink instances running in a
+  // renderer process in Metro, we need to disable the API altogether for Win8.
+  // See http://crbug.com/400846
+  if (base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_WIN8)
+    WebRuntimeFeatures::enableScreenOrientation(false);
+#endif // OS_WIN
 }
 
 void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
     const CommandLine& command_line) {
   if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
     WebRuntimeFeatures::enableExperimentalFeatures(true);
 
   SetRuntimeFeatureDefaultsForPlatform();
 
   if (command_line.HasSwitch(switches::kDisableDatabases))
@@ skipping 82 matching lines @@
     WebRuntimeFeatures::enableLayerSquashing(true);
 
   if (command_line.HasSwitch(switches::kEnableNetworkInformation) ||
       command_line.HasSwitch(
           switches::kEnableExperimentalWebPlatformFeatures)) {
     WebRuntimeFeatures::enableNetworkInformation(true);
   }
 }
 
 }  // namespace content