Add tracing of all memory allocated in all contexts

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_
 
 #if defined(ENABLE_GPU)
 
 #include <vector>
@@ skipping 75 matching lines @@
       StubMemoryStatMap;
   const StubMemoryStatMap& stub_memory_stats_for_last_manage() const {
     return stub_memory_stats_for_last_manage_;
   }
 
   // Tries to estimate the total available gpu memory for use by
   // GpuMemoryManager.  Ideally should consider other system applications and
   // other internal but non GpuMemoryManager managed sources, etc.
   size_t GetAvailableGpuMemory() const;
 
-  // GetPeakAssignedAllocationSum() will return the historical max value for the
-  // sum of all assigned client allocations (ie, peak system memory allocation).
-  size_t peak_assigned_allocation_sum() const {
-    return peak_assigned_allocation_sum_;
-  }
+  // Track a change in memory allocated by any context
+  void TrackMemoryAllocatedChange(size_t old_size, size_t new_size);
+
 
  private:
   friend class GpuMemoryManagerTest;
   void Manage();
 
   class CONTENT_EXPORT StubWithSurfaceComparator {
    public:
     bool operator()(GpuCommandBufferStubBase* lhs,
                     GpuCommandBufferStubBase* rhs);
   };
 
   GpuMemoryManagerClient* client_;
 
   base::CancelableClosure delayed_manage_callback_;
   bool manage_immediate_scheduled_;
 
   size_t max_surfaces_with_frontbuffer_soft_limit_;
 
   StubMemoryStatMap stub_memory_stats_for_last_manage_;
-  size_t peak_assigned_allocation_sum_;
+
+  // The current total memory usage, and historical maximum memory usage
+  size_t bytes_allocated_current_;
+  size_t bytes_allocated_historical_max_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryManager);
 };
 
 #endif
 
 #endif // CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_