ui: Move gl/ directory out of gfx/, up to ui/.

ui/gfx/gl/gl_surface_stub.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 UI_GFX_GL_GL_SURFACE_STUB_H_
-#define UI_GFX_GL_GL_SURFACE_STUB_H_
-#pragma once
-
-#include "ui/gfx/gl/gl_surface.h"
-
-namespace gfx {
-
-// A GLSurface that does nothing for unit tests.
-class GL_EXPORT GLSurfaceStub : public GLSurface {
- public:
-  void SetSize(const gfx::Size& size) { size_ = size; }
-
-  // Implement GLSurface.
-  virtual void Destroy() OVERRIDE;
-  virtual bool IsOffscreen() OVERRIDE;
-  virtual bool SwapBuffers() OVERRIDE;
-  virtual gfx::Size GetSize() OVERRIDE;
-  virtual void* GetHandle() OVERRIDE;
-
- protected:
-  virtual ~GLSurfaceStub();
-
- private:
-  gfx::Size size_;
-};
-
-}  // namespace gfx
-
-#endif  // UI_GFX_GL_GL_SURFACE_STUB_H_