CC Animations: Make LayerAnimationController creation optional

chrome/browser/android/compositor/layer/content_layer.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_
 #define CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/output/filter_operations.h"
@@ skipping 27 matching lines @@
                      float content_alpha_override,
                      float saturation,
                      float brightness,
                      const gfx::Rect& desired_bounds,
                      const gfx::Size& content_size);
   bool ShowingLiveLayer() { return !static_attached_ && content_attached_; }
   gfx::Size GetContentSize();
 
   scoped_refptr<cc::Layer> layer() override;
 
+  static const cc::LayerSettings& ContentLayerSettings();
+  static void SetContentLayerSettings(const cc::LayerSettings& settings);
+
  protected:
   explicit ContentLayer(TabContentManager* tab_content_manager);
   ~ContentLayer() override;
 
  private:
   void SetContentLayer(scoped_refptr<cc::Layer> layer);
   void SetStaticLayer(scoped_refptr<ThumbnailLayer> layer);
   void ClipContentLayer(scoped_refptr<cc::Layer> content_layer,
                         gfx::Rect clipping,
                         gfx::Size content_size);
@@ skipping 10 matching lines @@
 
   TabContentManager* tab_content_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentLayer);
 };
 
 }  //  namespace android
 }  //  namespace chrome
 
 #endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_