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

cc/output/gl_renderer_unittest.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/output/gl_renderer.h"
 
 #include <set>
 
 #include "cc/base/math_util.h"
 #include "cc/output/compositor_frame_metadata.h"
@@ skipping 1041 matching lines @@
 };
 
 class NonReshapableOutputSurface : public FakeOutputSurface {
  public:
   explicit NonReshapableOutputSurface(
       scoped_ptr<TestWebGraphicsContext3D> context3d)
       : FakeOutputSurface(TestContextProvider::Create(context3d.Pass()),
                           false) {
     surface_size_ = gfx::Size(500, 500);
   }
-  virtual void Reshape(const gfx::Size& size, float scale_factor) OVERRIDE {}
-  void set_fixed_size(const gfx::Size& size) { surface_size_ = size; }
+  virtual void Reshape(gfx::Size size, float scale_factor) OVERRIDE {}
+  void set_fixed_size(gfx::Size size) { surface_size_ = size; }
 };
 
 TEST_F(GLRendererTest, NoDiscardOnPartialUpdates) {
   scoped_ptr<DiscardCheckingContext> context_owned(new DiscardCheckingContext);
   DiscardCheckingContext* context = context_owned.get();
 
   FakeOutputSurfaceClient output_surface_client;
   scoped_ptr<NonReshapableOutputSurface> output_surface(
       new NonReshapableOutputSurface(
           context_owned.PassAs<TestWebGraphicsContext3D>()));
@@ skipping 593 matching lines @@
   MockOutputSurface()
       : OutputSurface(
             TestContextProvider::Create(scoped_ptr<TestWebGraphicsContext3D>(
                 new StrictMock<OutputSurfaceMockContext>))) {
     surface_size_ = gfx::Size(100, 100);
   }
   virtual ~MockOutputSurface() {}
 
   MOCK_METHOD0(EnsureBackbuffer, void());
   MOCK_METHOD0(DiscardBackbuffer, void());
-  MOCK_METHOD2(Reshape, void(const gfx::Size& size, float scale_factor));
+  MOCK_METHOD2(Reshape, void(gfx::Size size, float scale_factor));
   MOCK_METHOD0(BindFramebuffer, void());
   MOCK_METHOD1(SwapBuffers, void(CompositorFrame* frame));
 };
 
 class MockOutputSurfaceTest : public GLRendererTest {
  protected:
   virtual void SetUp() {
     FakeOutputSurfaceClient output_surface_client_;
     CHECK(output_surface_.BindToClient(&output_surface_client_));
 
@@ skipping 154 matching lines @@
   base::MessageLoop::current()->Run();
 
   // The sync point should have happened.
   EXPECT_EQ(1, sync_point_callback_count);
   EXPECT_EQ(1, other_callback_count);
 }
 #endif  // OS_ANDROID
 
 }  // namespace
 }  // namespace cc