Revert of Refactor content/common/gpu into gpu/ipc/service

gpu/ipc/service/gpu_memory_tracking.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 GPU_IPC_SERVICE_GPU_MEMORY_TRACKING_H_
-#define GPU_IPC_SERVICE_GPU_MEMORY_TRACKING_H_
-
-#include <stdint.h>
-
-#include "base/process/process.h"
-#include "gpu/command_buffer/service/memory_tracking.h"
-#include "gpu/gpu_export.h"
-
-namespace gpu {
-
-class GpuMemoryManager;
-
-// All decoders in a context group point to a single GpuMemoryTrackingGroup,
-// which tracks GPU resource consumption for the entire context group.
-class GPU_EXPORT GpuMemoryTrackingGroup {
- public:
-  ~GpuMemoryTrackingGroup();
-  void TrackMemoryAllocatedChange(uint64_t old_size, uint64_t new_size);
-  bool EnsureGPUMemoryAvailable(uint64_t size_needed);
-  base::ProcessId GetPid() const {
-    return pid_;
-  }
-  uint64_t GetSize() const { return size_; }
-  gles2::MemoryTracker* GetMemoryTracker() const {
-    return memory_tracker_;
-  }
-
- private:
-  friend class GpuMemoryManager;
-
-  GpuMemoryTrackingGroup(base::ProcessId pid,
-                         gles2::MemoryTracker* memory_tracker,
-                         GpuMemoryManager* memory_manager);
-
-  base::ProcessId pid_;
-  uint64_t size_;
-
-  // Set and used only during the Manage function, to determine which
-  // non-surface clients should be hibernated.
-  bool hibernated_;
-
-  gles2::MemoryTracker* memory_tracker_;
-  GpuMemoryManager* memory_manager_;
-};
-
-}  // namespace gpu
-
-#endif  // GPU_IPC_SERVICE_GPU_MEMORY_TRACKING_H_