Allow Web Animations CSS flag to be turned off as well as on

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright (c) 2012 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 908 matching lines @@
     switches::kDisableSessionStorage,
     switches::kDisableSharedWorkers,
     switches::kDisableSpeechInput,
     switches::kDisableThreadedCompositing,
     switches::kDisableTouchAdjustment,
     switches::kDisableTouchDragDrop,
     switches::kDisableTouchEditing,
     switches::kDisableUniversalAcceleratedOverflowScroll,
     switches::kDisableUnprefixedMediaSource,
     switches::kDisableVp8AlphaPlayback,
+    switches::kDisableWebAnimationsCSS,
     switches::kDisableWebAudio,
     switches::kDisableWebKitMediaSource,
     switches::kDomAutomationController,
     switches::kEnableAcceleratedFixedRootBackground,
     switches::kEnableAcceleratedOverflowScroll,
     switches::kEnableAcceleratedScrollableFrames,
     switches::kEnableAccessibilityLogging,
     switches::kEnableBeginFrameScheduling,
     switches::kEnableBrowserPluginForAllViewTypes,
     switches::kEnableCompositedScrollingForFrames,
@@ skipping 905 matching lines @@
     // Skip widgets in other processes.
     if (widget->GetProcess()->GetID() != GetID())
       continue;
 
     RenderViewHost* rvh = RenderViewHost::From(widget);
     rvh->UpdateWebkitPreferences(rvh->GetWebkitPreferences());
   }
 }
 
 }  // namespace content