Cleanup GpuMemoryManager and helpers.

content/common/gpu/gpu_memory_uma_stats.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_UMA_STATS_H_
 #define CONTENT_COMMON_GPU_GPU_MEMORY_UMA_STATS_H_
 
 #include "base/basictypes.h"
 
 namespace content {
 
 // Memory usage statistics send periodically to the browser process to report
 // in UMA histograms if the GPU process crashes.
 struct GPUMemoryUmaStats {
   GPUMemoryUmaStats()
       : bytes_allocated_current(0),
         bytes_allocated_max(0),
-        bytes_limit(0),
-        client_count(0),
         context_group_count(0) {
   }
 
   // The number of bytes currently allocated.
   size_t bytes_allocated_current;
 
   // The maximum number of bytes ever allocated at once.
   size_t bytes_allocated_max;
 
-  // The memory limit being imposed by the memory manager.
-  size_t bytes_limit;
-
-  // The number of managed memory clients.
-  size_t client_count;
-
   // The number of context groups.
   size_t context_group_count;
-
-  // The number of visible windows.
-  uint32 window_count;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_GPU_MEMORY_UMA_STATS_H_