Implement TextureImageTransportSurface using texture mailbox

ui/compositor/compositor.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 UI_COMPOSITOR_COMPOSITOR_H_
 #define UI_COMPOSITOR_COMPOSITOR_H_
 
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 85 matching lines @@
  public:
   Texture(bool flipped, const gfx::Size& size, float device_scale_factor);
 
   bool flipped() const { return flipped_; }
   gfx::Size size() const { return size_; }
   float device_scale_factor() const { return device_scale_factor_; }
 
   virtual unsigned int PrepareTexture() = 0;
   virtual WebKit::WebGraphicsContext3D* HostContext3D() = 0;
 
+  virtual void Consume(const gfx::Size& new_size) {}
+  virtual void Produce() {}
+
  protected:
   virtual ~Texture();
+  gfx::Size size_;  // in pixel
 
  private:
   friend class base::RefCounted<Texture>;
 
   bool flipped_;
-  gfx::Size size_;  // in pixel
   float device_scale_factor_;
 
   DISALLOW_COPY_AND_ASSIGN(Texture);
 };
 
 // An interface to allow the compositor to communicate with its owner.
 class COMPOSITOR_EXPORT CompositorDelegate {
  public:
   // Requests the owner to schedule a redraw of the layer tree.
   virtual void ScheduleDraw() = 0;
@@ skipping 133 matching lines @@
   int last_ended_frame_;
 
   bool disable_schedule_composite_;
 
   DISALLOW_COPY_AND_ASSIGN(Compositor);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_COMPOSITOR_H_