[#2] Pass gfx structs by const ref (gfx::Rect, gfx::RectF)

cc/quads/render_pass_draw_quad.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 CC_QUADS_RENDER_PASS_DRAW_QUAD_H_
 #define CC_QUADS_RENDER_PASS_DRAW_QUAD_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
 #include "cc/output/filter_operations.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/quads/render_pass.h"
 #include "cc/resources/resource_provider.h"
 
 namespace cc {
 
 class CC_EXPORT RenderPassDrawQuad : public DrawQuad {
  public:
   static scoped_ptr<RenderPassDrawQuad> Create();
   virtual ~RenderPassDrawQuad();
 
   void SetNew(const SharedQuadState* shared_quad_state,
-              gfx::Rect rect,
+              const gfx::Rect& rect,
               RenderPass::Id render_pass_id,
               bool is_replica,
               ResourceProvider::ResourceId mask_resource_id,
-              gfx::Rect contents_changed_since_last_frame,
-              gfx::RectF mask_uv_rect,
+              const gfx::Rect& contents_changed_since_last_frame,
+              const gfx::RectF& mask_uv_rect,
               const FilterOperations& filters,
               const FilterOperations& background_filters);
 
   void SetAll(const SharedQuadState* shared_quad_state,
-              gfx::Rect rect,
-              gfx::Rect opaque_rect,
-              gfx::Rect visible_rect,
+              const gfx::Rect& rect,
+              const gfx::Rect& opaque_rect,
+              const gfx::Rect& visible_rect,
               bool needs_blending,
               RenderPass::Id render_pass_id,
               bool is_replica,
               ResourceProvider::ResourceId mask_resource_id,
-              gfx::Rect contents_changed_since_last_frame,
-              gfx::RectF mask_uv_rect,
+              const gfx::Rect& contents_changed_since_last_frame,
+              const gfx::RectF& mask_uv_rect,
               const FilterOperations& filters,
               const FilterOperations& background_filters);
 
   scoped_ptr<RenderPassDrawQuad> Copy(
       const SharedQuadState* copied_shared_quad_state,
       RenderPass::Id copied_render_pass_id) const;
 
   RenderPass::Id render_pass_id;
   bool is_replica;
   ResourceProvider::ResourceId mask_resource_id;
@@ skipping 13 matching lines @@
   static const RenderPassDrawQuad* MaterialCast(const DrawQuad*);
 
  private:
   RenderPassDrawQuad();
   virtual void ExtendValue(base::DictionaryValue* value) const OVERRIDE;
 };
 
 }  // namespace cc
 
 #endif  // CC_QUADS_RENDER_PASS_DRAW_QUAD_H_