cc: add layer usage hint to texture layer

webkit/compositor_bindings/web_compositor_support_impl.h

 // 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.
 
 #ifndef WEBKIT_COMPOSITOR_BINDINGS_WEB_COMPOSITOR_SUPPORT_IMPL_H_
 #define WEBKIT_COMPOSITOR_BINDINGS_WEB_COMPOSITOR_SUPPORT_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/message_loop_proxy.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebLayer.h"
@@ skipping 15 matching lines @@
   virtual void initialize(WebKit::WebThread* compositor_thread);
   virtual bool isThreadingEnabled();
   virtual void shutdown();
   virtual WebKit::WebCompositorOutputSurface* createOutputSurfaceFor3D(
       WebKit::WebGraphicsContext3D* context);
   virtual WebKit::WebCompositorOutputSurface* createOutputSurfaceForSoftware();
   virtual WebKit::WebLayer* createLayer();
   virtual WebKit::WebContentLayer* createContentLayer(
       WebKit::WebContentLayerClient* client);
   virtual WebKit::WebExternalTextureLayer* createExternalTextureLayer(
-      WebKit::WebExternalTextureLayerClient* client);
+      WebKit::WebExternalTextureLayerClient* client, bool single_buffer);
   virtual WebKit::WebImageLayer* createImageLayer();
   virtual WebKit::WebSolidColorLayer* createSolidColorLayer();
   virtual WebKit::WebVideoLayer* createVideoLayer(
       WebKit::WebVideoFrameProvider*);
   virtual WebKit::WebScrollbarLayer* createScrollbarLayer(
       WebKit::WebScrollbar* scrollbar,
       WebKit::WebScrollbarThemePainter painter,
       WebKit::WebScrollbarThemeGeometry*);
   virtual WebKit::WebAnimation* createAnimation(
       const WebKit::WebAnimationCurve& curve,
       WebKit::WebAnimation::TargetProperty target,
       int animation_id);
   virtual WebKit::WebFloatAnimationCurve* createFloatAnimationCurve();
   virtual WebKit::WebTransformAnimationCurve* createTransformAnimationCurve();
   virtual WebKit::WebTransformOperations* createTransformOperations();
 
   scoped_refptr<base::MessageLoopProxy> compositor_thread_message_loop_proxy() {
     return compositor_thread_message_loop_proxy_;
   }
  private:
   scoped_refptr<base::MessageLoopProxy> compositor_thread_message_loop_proxy_;
   bool initialized_;
 };
 
 }  // namespace webkit
 
 #endif  // WEBKIT_COMPOSITOR_BINDINGS_WEB_COMPOSITOR_SUPPORT_IMPL_H_