[Ozone-DRI] Removing MockDriSurface implementation

ui/ozone/platform/dri/test/mock_dri_surface.h

-// Copyright 2014 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_OZONE_PLATFORM_DRI_TEST_MOCK_DRI_SURFACE_H_
-#define UI_OZONE_PLATFORM_DRI_TEST_MOCK_DRI_SURFACE_H_
-
-#include <vector>
-
-#include "ui/ozone/platform/dri/dri_surface.h"
-
-namespace gfx {
-class Size;
-}  // namespace gfx
-
-namespace ui {
-
-class DriBuffer;
-class DriWrapper;
-
-class MockDriSurface : public DriSurface {
- public:
-  MockDriSurface(DriWrapper* dri, const gfx::Size& size);
-  virtual ~MockDriSurface();
-
-  const std::vector<ui::DriBuffer*>& bitmaps() const { return bitmaps_; }
-  void set_initialize_expectation(bool state) {
-    initialize_expectation_ = state;
-  }
-
- private:
-  // DriSurface:
-  virtual ui::DriBuffer* CreateBuffer() OVERRIDE;
-
-  DriWrapper* dri_;                  // Not owned.
-  std::vector<DriBuffer*> bitmaps_;  // Not owned.
-
-  bool initialize_expectation_;
-
-  DISALLOW_COPY_AND_ASSIGN(MockDriSurface);
-};
-
-}  // namespace ui
-
-#endif  // UI_OZONE_PLATFORM_DRI_TEST_MOCK_DRI_SURFACE_H_