[#7] Resubmitted - Pass gfx structs by const ref (gfx::Size)

cc/resources/video_resource_updater.h

 // Copyright 2013 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_RESOURCES_VIDEO_RESOURCE_UPDATER_H_
 #define CC_RESOURCES_VIDEO_RESOURCE_UPDATER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 62 matching lines @@
       const scoped_refptr<media::VideoFrame>& video_frame);
 
  private:
   struct PlaneResource {
     unsigned resource_id;
     gfx::Size resource_size;
     ResourceFormat resource_format;
     gpu::Mailbox mailbox;
 
     PlaneResource(unsigned resource_id,
-                  gfx::Size resource_size,
+                  const gfx::Size& resource_size,
                   ResourceFormat resource_format,
                   gpu::Mailbox mailbox)
         : resource_id(resource_id),
           resource_size(resource_size),
           resource_format(resource_format),
           mailbox(mailbox) {}
   };
 
   void DeleteResource(unsigned resource_id);
   bool VerifyFrame(const scoped_refptr<media::VideoFrame>& video_frame);
@@ skipping 19 matching lines @@
 
   std::vector<unsigned> all_resources_;
   std::vector<PlaneResource> recycled_resources_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoResourceUpdater);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_VIDEO_RESOURCE_UPDATER_H_