Remove GPU memory UMAs

gpu/ipc/service/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 GPU_IPC_SERVICE_GPU_MEMORY_MANAGER_H_
 #define GPU_IPC_SERVICE_GPU_MEMORY_MANAGER_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 30 matching lines @@
   uint64_t GetTrackerMemoryUsage(gles2::MemoryTracker* tracker) const;
 
  private:
   friend class GpuMemoryManagerTest;
   friend class GpuMemoryTrackingGroup;
   friend class GpuMemoryManagerClientState;
 
   typedef std::map<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 gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_MEMORY_MANAGER_H_