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

cc/quads/stream_video_draw_quad.h

Index: cc/quads/stream_video_draw_quad.h
diff --git a/cc/quads/stream_video_draw_quad.h b/cc/quads/stream_video_draw_quad.h
index e610f4333cee9105c6f748cfd8dde5853208423f..27a67659a87780c2c77b0cae7e1588f2505894b7 100644
--- a/cc/quads/stream_video_draw_quad.h
+++ b/cc/quads/stream_video_draw_quad.h
@@ -17,15 +17,15 @@ class CC_EXPORT StreamVideoDrawQuad : public DrawQuad {
   static scoped_ptr<StreamVideoDrawQuad> Create();
 
   void SetNew(const SharedQuadState* shared_quad_state,
-              gfx::Rect rect,
-              gfx::Rect opaque_rect,
+              const gfx::Rect& rect,
+              const gfx::Rect& opaque_rect,
               unsigned resource_id,
               const gfx::Transform& matrix);
 
   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,
               unsigned resource_id,
               const gfx::Transform& matrix);