Plumb damage rect to browser compositor.

ui/gfx/compositor/compositor_gl.h

 // Copyright (c) 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 UI_GFX_COMPOSITOR_COMPOSITOR_GL_H_
 #define UI_GFX_COMPOSITOR_COMPOSITOR_GL_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 59 matching lines @@
  public:
   TextureGL();
 
   virtual void SetCanvas(const SkCanvas& canvas,
                          const gfx::Point& origin,
                          const gfx::Size& overall_size) OVERRIDE;
 
   virtual void Draw(const ui::TextureDrawParams& params,
                     const gfx::Rect& clip_bounds_in_texture) OVERRIDE;
 
+  const gfx::Size& size() const { return size_; }
+
  protected:
   explicit TextureGL(const gfx::Size& size);
   virtual ~TextureGL();
 
   // Actually draws the texture.
   // Only the region defined by draw_bounds will be drawn.
   void DrawInternal(const TextureProgramGL& program,
                     const ui::TextureDrawParams& params,
                     const gfx::Rect& clip_bounds_in_texture);
 
@@ skipping 33 matching lines @@
 
   // Keep track of whether compositing has started or not.
   bool started_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorGL);
 };
 
 }  // namespace ui
 
 #endif  // UI_GFX_COMPOSITOR_COMPOSITOR_GL_H_