Blend TextureLayer background-color at draw time.

webkit/renderer/compositor_bindings/web_external_texture_layer_impl.h

 // Copyright 2011 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_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_
 #define WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 19 matching lines @@
  public:
   WEBKIT_COMPOSITOR_BINDINGS_EXPORT explicit WebExternalTextureLayerImpl(
       WebKit::WebExternalTextureLayerClient*);
   virtual ~WebExternalTextureLayerImpl();
 
   // WebKit::WebExternalTextureLayer implementation.
   virtual WebKit::WebLayer* layer();
   virtual void clearTexture();
   virtual void setOpaque(bool opaque);
   virtual void setPremultipliedAlpha(bool premultiplied);
+  virtual void setBlendBackgroundColor(bool blend);
   virtual void setRateLimitContext(bool rate_limit);
 
   // TextureLayerClient implementation.
   virtual unsigned PrepareTexture() OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* Context3d() OVERRIDE;
   virtual bool PrepareTextureMailbox(cc::TextureMailbox* mailbox,
                                      bool use_shared_memory) OVERRIDE;
 
  private:
   static void DidReleaseMailbox(
       base::WeakPtr<WebExternalTextureLayerImpl> layer,
       const WebKit::WebExternalTextureMailbox& mailbox,
       WebExternalBitmapImpl* bitmap,
       unsigned sync_point,
       bool lost_resource);
 
   WebExternalBitmapImpl* AllocateBitmap();
 
   WebKit::WebExternalTextureLayerClient* client_;
   scoped_ptr<WebLayerImpl> layer_;
   ScopedVector<WebExternalBitmapImpl> free_bitmaps_;
 
   DISALLOW_COPY_AND_ASSIGN(WebExternalTextureLayerImpl);
 };
 
 }  // namespace webkit
 
 #endif  // WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_