cc: Apply occlusion before creating quads in RenderSurfaceImpl.

cc/trees/quad_culler.h

 // Copyright 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 CC_TREES_QUAD_CULLER_H_
 #define CC_TREES_QUAD_CULLER_H_
 
 #include "cc/base/cc_export.h"
 #include "cc/layers/quad_sink.h"
 #include "cc/quads/render_pass.h"
@@ skipping 12 matching lines @@
              const OcclusionTracker<LayerImpl>& occlusion_tracker,
              bool for_surface);
   virtual ~QuadCuller() {}
 
   // QuadSink implementation.
   virtual SharedQuadState* UseSharedQuadState(
       scoped_ptr<SharedQuadState> shared_quad_state) OVERRIDE;
   virtual gfx::Rect UnoccludedContentRect(const gfx::Rect& content_rect,
                                           const gfx::Transform& draw_transform)
       OVERRIDE;
+  virtual gfx::Rect UnoccludedContributingSurfaceContentRect(
+      gfx::Rect& content_rect,
+      gfx::Transform& draw_transform) OVERRIDE;
   virtual bool MaybeAppend(scoped_ptr<DrawQuad> draw_quad) OVERRIDE;
   virtual void Append(scoped_ptr<DrawQuad> draw_quad) OVERRIDE;
 
  private:
   QuadList* quad_list_;
   SharedQuadStateList* shared_quad_state_list_;
   const LayerImpl* layer_;
   const OcclusionTracker<LayerImpl>& occlusion_tracker_;
 
   SharedQuadState* current_shared_quad_state_;
   bool for_surface_;
 
   DISALLOW_COPY_AND_ASSIGN(QuadCuller);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_QUAD_CULLER_H_