[#3] Pass gfx structs by const ref (gfx::SizeF)

cc/quads/yuv_video_draw_quad.cc

 // 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.
 
 #include "cc/quads/yuv_video_draw_quad.h"
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "cc/base/math_util.h"
 
 namespace cc {
 
 YUVVideoDrawQuad::YUVVideoDrawQuad()
     : y_plane_resource_id(0),
       u_plane_resource_id(0),
       v_plane_resource_id(0),
       a_plane_resource_id(0) {}
 YUVVideoDrawQuad::~YUVVideoDrawQuad() {}
 
 scoped_ptr<YUVVideoDrawQuad> YUVVideoDrawQuad::Create() {
   return make_scoped_ptr(new YUVVideoDrawQuad);
 }
 
 void YUVVideoDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
                               const gfx::Rect& rect,
                               const gfx::Rect& opaque_rect,
-                              gfx::SizeF tex_scale,
+                              const gfx::SizeF& tex_scale,
                               unsigned y_plane_resource_id,
                               unsigned u_plane_resource_id,
                               unsigned v_plane_resource_id,
                               unsigned a_plane_resource_id) {
   gfx::Rect visible_rect = rect;
   bool needs_blending = false;
   DrawQuad::SetAll(shared_quad_state, DrawQuad::YUV_VIDEO_CONTENT, rect,
                    opaque_rect, visible_rect, needs_blending);
   this->tex_scale = tex_scale;
   this->y_plane_resource_id = y_plane_resource_id;
   this->u_plane_resource_id = u_plane_resource_id;
   this->v_plane_resource_id = v_plane_resource_id;
   this->a_plane_resource_id = a_plane_resource_id;
 }
 
 void YUVVideoDrawQuad::SetAll(const SharedQuadState* shared_quad_state,
                               const gfx::Rect& rect,
                               const gfx::Rect& opaque_rect,
                               const gfx::Rect& visible_rect,
                               bool needs_blending,
-                              gfx::SizeF tex_scale,
+                              const gfx::SizeF& tex_scale,
                               unsigned y_plane_resource_id,
                               unsigned u_plane_resource_id,
                               unsigned v_plane_resource_id,
                               unsigned a_plane_resource_id) {
   DrawQuad::SetAll(shared_quad_state, DrawQuad::YUV_VIDEO_CONTENT, rect,
                    opaque_rect, visible_rect, needs_blending);
   this->tex_scale = tex_scale;
   this->y_plane_resource_id = y_plane_resource_id;
   this->u_plane_resource_id = u_plane_resource_id;
   this->v_plane_resource_id = v_plane_resource_id;
@@ skipping 17 matching lines @@
 
 void YUVVideoDrawQuad::ExtendValue(base::DictionaryValue* value) const {
   value->Set("tex_scale", MathUtil::AsValue(tex_scale).release());
   value->SetInteger("y_plane_resource_id", y_plane_resource_id);
   value->SetInteger("u_plane_resource_id", u_plane_resource_id);
   value->SetInteger("v_plane_resource_id", v_plane_resource_id);
   value->SetInteger("a_plane_resource_id", a_plane_resource_id);
 }
 
 }  // namespace cc