Revert of services/ui: Revert CLs that broke Windows.

services/ui/gles2/gpu_memory_tracker.h

-// Copyright 2015 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 SERVICES_UI_GLES2_GPU_MEMORY_TRACKER_H_
-#define SERVICES_UI_GLES2_GPU_MEMORY_TRACKER_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include "base/macros.h"
-#include "gpu/command_buffer/service/memory_tracking.h"
-
-namespace ui {
-
-// TODO(fsamuel, rjkroege): This is a stub implementation that needs to be
-// completed for proper memory tracking.
-class GpuMemoryTracker : public gpu::gles2::MemoryTracker {
- public:
-  GpuMemoryTracker();
-
-  // gpu::MemoryTracker implementation:
-  void TrackMemoryAllocatedChange(
-      size_t old_size,
-      size_t new_size) override;
-  bool EnsureGPUMemoryAvailable(size_t size_needed) override;
-  uint64_t ClientTracingId() const override;
-  int ClientId() const override;
-  uint64_t ShareGroupTracingGUID() const override;
-
- private:
-  ~GpuMemoryTracker() override;
-
-  DISALLOW_COPY_AND_ASSIGN(GpuMemoryTracker);
-};
-
-}  // namespace ui
-
-#endif  // SERVICES_UI_GLES2_GPU_MEMORY_TRACKER_H_