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

cc/output/copy_output_request.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_OUTPUT_COPY_OUTPUT_REQUEST_H_
 #define CC_OUTPUT_COPY_OUTPUT_REQUEST_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
@@ skipping 44 matching lines @@
 
   // By default copy requests create a new TextureMailbox to return contents
   // in. This allows a client to provide a TextureMailbox, and the compositor
   // will place the result inside the TextureMailbox.
   void SetTextureMailbox(const TextureMailbox& texture_mailbox);
   bool has_texture_mailbox() const { return has_texture_mailbox_; }
   const TextureMailbox& texture_mailbox() const { return texture_mailbox_; }
 
   void SendEmptyResult();
   void SendBitmapResult(scoped_ptr<SkBitmap> bitmap);
-  void SendTextureResult(const gfx::Size& size,
+  void SendTextureResult(gfx::Size size,
                          const TextureMailbox& texture_mailbox,
                          scoped_ptr<SingleReleaseCallback> release_callback);
 
   void SendResult(scoped_ptr<CopyOutputResult> result);
 
  private:
   CopyOutputRequest();
   CopyOutputRequest(bool force_bitmap_result,
                     const CopyOutputRequestCallback& result_callback);
 
   bool force_bitmap_result_;
   bool has_area_;
   bool has_texture_mailbox_;
   gfx::Rect area_;
   TextureMailbox texture_mailbox_;
   CopyOutputRequestCallback result_callback_;
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_COPY_OUTPUT_REQUEST_H_