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

cc/quads/render_pass_draw_quad.h

Index: cc/quads/render_pass_draw_quad.h
diff --git a/cc/quads/render_pass_draw_quad.h b/cc/quads/render_pass_draw_quad.h
index 8546c45621c164737602356f3a37c2cfaf165630..28b58dbf4d15cbe066222b552a0b3b966fed020a 100644
--- a/cc/quads/render_pass_draw_quad.h
+++ b/cc/quads/render_pass_draw_quad.h
@@ -21,25 +21,25 @@ class CC_EXPORT RenderPassDrawQuad : public DrawQuad {
   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);