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 23 matching lines @@
   virtual ~WebExternalTextureLayerImpl();
 
   // WebKit::WebExternalTextureLayer implementation.
   virtual WebKit::WebLayer* layer();
   virtual void clearTexture();
   virtual void setTextureId(unsigned texture_id);
   virtual void setFlipped(bool flipped);
   virtual void setUVRect(const WebKit::WebFloatRect& uv_rect);
   virtual void setOpaque(bool opaque);
   virtual void setPremultipliedAlpha(bool premultiplied);
+#if WEB_EXTERNAL_TEXTURE_LAYER_HAS_BLEND_BACKGROUND_COLOR

[enne (OOO), 2013/07/10 17:52:13]

I agree with piman's previous comment.  You don't need the #ifs here; this is a
virtual function.  It will save you a cleanup change later.

[alokp, 2013/07/10 19:06:20]

Done.

+  virtual void setBlendBackgroundColor(bool blend);
+#endif  // WEB_EXTERNAL_TEXTURE_LAYER_HAS_BLEND_BACKGROUND_COLOR
 
   virtual void willModifyTexture();
   virtual void setRateLimitContext(bool rate_limit);
 
   // TextureLayerClient implementation.
   virtual unsigned PrepareTexture(cc::ResourceUpdateQueue*) OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* Context3d() OVERRIDE;
   virtual bool PrepareTextureMailbox(cc::TextureMailbox* mailbox,
                                      bool use_shared_memory) OVERRIDE;
 
@@ skipping 11 matching lines @@
   scoped_ptr<WebLayerImpl> layer_;
   bool uses_mailbox_;
   ScopedVector<WebExternalBitmapImpl> free_bitmaps_;
 
   DISALLOW_COPY_AND_ASSIGN(WebExternalTextureLayerImpl);
 };
 
 }  // namespace webkit
 
 #endif  // WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_