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

content/common/gpu/gpu_memory_manager.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 CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_
+#define CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_
+
+#include <stdint.h>
+
+#include <list>
+#include <map>
+
+#include "base/cancelable_callback.h"
+#include "base/containers/hash_tables.h"
+#include "base/gtest_prod_util.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "content/common/content_export.h"
+#include "gpu/command_buffer/common/gpu_memory_allocation.h"
+#include "gpu/command_buffer/service/memory_tracking.h"
+
+namespace gpu {
+struct VideoMemoryUsageStats;
+}
+
+namespace content {
+
+class GpuChannelManager;
+class GpuMemoryTrackingGroup;
+
+class CONTENT_EXPORT GpuMemoryManager :
+    public base::SupportsWeakPtr<GpuMemoryManager> {
+ public:
+  explicit GpuMemoryManager(GpuChannelManager* channel_manager);
+  ~GpuMemoryManager();
+
+  // Retrieve GPU Resource consumption statistics for the task manager
+  void GetVideoMemoryUsageStats(
+      gpu::VideoMemoryUsageStats* video_memory_usage_stats) const;
+
+  GpuMemoryTrackingGroup* CreateTrackingGroup(
+      base::ProcessId pid, gpu::gles2::MemoryTracker* memory_tracker);
+
+  uint64_t GetTrackerMemoryUsage(gpu::gles2::MemoryTracker* tracker) const;
+
+ private:
+  friend class GpuMemoryManagerTest;
+  friend class GpuMemoryTrackingGroup;
+  friend class GpuMemoryManagerClientState;
+
+  typedef std::map<gpu::gles2::MemoryTracker*, GpuMemoryTrackingGroup*>
+      TrackingGroupMap;
+
+  // Send memory usage stats to the browser process.
+  void SendUmaStatsToHost();
+
+  // Get the current number of bytes allocated.
+  uint64_t GetCurrentUsage() const { return bytes_allocated_current_; }
+
+  // GpuMemoryTrackingGroup interface
+  void TrackMemoryAllocatedChange(GpuMemoryTrackingGroup* tracking_group,
+                                  uint64_t old_size,
+                                  uint64_t new_size);
+  void OnDestroyTrackingGroup(GpuMemoryTrackingGroup* tracking_group);
+  bool EnsureGPUMemoryAvailable(uint64_t size_needed);
+
+  GpuChannelManager* channel_manager_;
+
+  // All context groups' tracking structures
+  TrackingGroupMap tracking_groups_;
+
+  // The current total memory usage, and historical maximum memory usage
+  uint64_t bytes_allocated_current_;
+  uint64_t bytes_allocated_historical_max_;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuMemoryManager);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_