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

cc/resources/video_resource_updater.cc

 // 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.
 
 #include "cc/resources/video_resource_updater.h"
 
 #include "base/bind.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/resources/resource_provider.h"
 #include "gpu/GLES2/gl2extchromium.h"
@@ skipping 71 matching lines @@
     case media::VideoFrame::I420:
       break;
   }
   return false;
 }
 
 // For frames that we receive in software format, determine the dimensions of
 // each plane in the frame.
 static gfx::Size SoftwarePlaneDimension(
     media::VideoFrame::Format input_frame_format,
-    gfx::Size coded_size,
+    const gfx::Size& coded_size,
     ResourceFormat output_resource_format,
     int plane_index) {
   if (output_resource_format == kYUVResourceFormat) {
     if (plane_index == media::VideoFrame::kYPlane ||
         plane_index == media::VideoFrame::kAPlane)
       return coded_size;
 
     switch (input_frame_format) {
       case media::VideoFrame::YV12:
       case media::VideoFrame::YV12A:
@@ skipping 296 matching lines @@
   }
 
   PlaneResource recycled_resource(data.resource_id,
                                   data.resource_size,
                                   data.resource_format,
                                   data.mailbox);
   updater->recycled_resources_.push_back(recycled_resource);
 }
 
 }  // namespace cc