Enable OrientationEvent only for android.

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/public/common/content_switches.h"
 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
 
@@ skipping 24 matching lines @@
   // Android does not support the Gamepad API.
   WebRuntimeFeatures::enableGamepad(false);
   // Android does not have support for PagePopup
   WebRuntimeFeatures::enablePagePopup(false);
   // Android does not yet support the Web Notification API. crbug.com/115320
   WebRuntimeFeatures::enableNotifications(false);
   // Android does not yet support SharedWorker. crbug.com/154571
   WebRuntimeFeatures::enableSharedWorker(false);
   // Android does not yet support NavigatorContentUtils.
   WebRuntimeFeatures::enableNavigatorContentUtils(false);
+  // Android OrientationEvent only for android.

[darin (slow to review), 2014/01/10 05:44:19]

I think the "only for android" bit is redundant. You are inside an #if
defined(OS_ANDROID) section, and the first word of this comment also says
"Android".

+  WebRuntimeFeatures::enableOrientationEvent(true);
 #else
   WebRuntimeFeatures::enableNavigatorContentUtils(true);
 #endif  // defined(OS_ANDROID)
 }
 
 void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
     const CommandLine& command_line) {
   WebRuntimeFeatures::enableStableFeatures(true);
 
   if (command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
@@ skipping 125 matching lines @@
     WebRuntimeFeatures::enableInputModeAttribute(true);
 
   if (command_line.HasSwitch(switches::kEnableFastTextAutosizing))
     WebRuntimeFeatures::enableFastTextAutosizing(true);
 
   if (command_line.HasSwitch(switches::kEnableRepaintAfterLayout))
     WebRuntimeFeatures::enableRepaintAfterLayout(true);
 }
 
 }  // namespace content