cc: Stop using drawableContentRect for occlusion.

cc/shared_quad_state.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_SHARED_QUAD_STATE_H_
 #define CC_SHARED_QUAD_STATE_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 
 class CC_EXPORT SharedQuadState {
  public:
   static scoped_ptr<SharedQuadState> Create();
   ~SharedQuadState();
 
   scoped_ptr<SharedQuadState> Copy() const;
 
   void SetAll(const gfx::Transform& content_to_target_transform,
               const gfx::Rect& visible_content_rect,
-              const gfx::Rect& clipped_rect_in_target,
               const gfx::Rect& clip_rect,
               bool is_clipped,
               float opacity);
 
   // Transforms from quad's original content space to its target content space.
   gfx::Transform content_to_target_transform;
   // This rect lives in the content space for the quad's originating layer.
   gfx::Rect visible_content_rect;
-  gfx::Rect clipped_rect_in_target;
   gfx::Rect clip_rect;
   bool is_clipped;
   float opacity;
 
  private:
   SharedQuadState();
 };
 
 }
 
 #endif  // CC_SHARED_QUAD_STATE_H_