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

content/renderer/gpu/mailbox_output_surface.h

 // Copyright (c) 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.
 
 #ifndef CONTENT_RENDERER_GPU_MAILBOX_OUTPUT_SURFACE_H_
 #define CONTENT_RENDERER_GPU_MAILBOX_OUTPUT_SURFACE_H_
 
 #include <queue>
 
 #include "cc/resources/resource_format.h"
@@ skipping 17 matching lines @@
       int32 routing_id,
       uint32 output_surface_id,
       const scoped_refptr<ContextProviderCommandBuffer>& context_provider,
       scoped_ptr<cc::SoftwareOutputDevice> software_device,
       cc::ResourceFormat format);
   virtual ~MailboxOutputSurface();
 
   // cc::OutputSurface implementation.
   virtual void EnsureBackbuffer() OVERRIDE;
   virtual void DiscardBackbuffer() OVERRIDE;
-  virtual void Reshape(const gfx::Size& size, float scale_factor) OVERRIDE;
+  virtual void Reshape(gfx::Size size, float scale_factor) OVERRIDE;
   virtual void BindFramebuffer() OVERRIDE;
   virtual void SwapBuffers(cc::CompositorFrame* frame) OVERRIDE;
 
  private:
   // CompositorOutputSurface overrides.
   virtual void OnSwapAck(uint32 output_surface_id,
                          const cc::CompositorFrameAck& ack) OVERRIDE;
 
   size_t GetNumAcksPending();
 
@@ skipping 16 matching lines @@
   std::queue<TransferableFrame> returned_textures_;
 
   uint32 fbo_;
   bool is_backbuffer_discarded_;
   cc::ResourceFormat format_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_MAILBOX_OUTPUT_SURFACE_H_