Add GPU memory tab to the task manager.

content/browser/gpu/gpu_data_manager_impl.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_BROWSER_GPU_GPU_DATA_MANAGER_IMPL_H_
 #define CONTENT_BROWSER_GPU_GPU_DATA_MANAGER_IMPL_H_
 
 #include <set>
 #include <string>
 
@@ skipping 15 matching lines @@
   // Getter for the singleton. This will return NULL on failure.
   static GpuDataManagerImpl* GetInstance();
 
   // GpuDataManager implementation.
   virtual content::GpuFeatureType GetGpuFeatureType() OVERRIDE;
   virtual void SetGpuFeatureType(content::GpuFeatureType feature_type) OVERRIDE;
   virtual content::GPUInfo GetGPUInfo() const OVERRIDE;
   virtual bool GpuAccessAllowed() OVERRIDE;
   virtual void RequestCompleteGpuInfoIfNeeded() OVERRIDE;
   virtual bool IsCompleteGPUInfoAvailable() const OVERRIDE;
+  virtual void RequestVidmemUsageStatsUpdate() OVERRIDE;
   virtual bool ShouldUseSoftwareRendering() OVERRIDE;
   virtual void RegisterSwiftShaderPath(const FilePath& path) OVERRIDE;
   virtual const base::ListValue& GetLogMessages() const OVERRIDE;
   virtual void AddObserver(content::GpuDataManagerObserver* observer) OVERRIDE;
   virtual void RemoveObserver(
       content::GpuDataManagerObserver* observer) OVERRIDE;
 
   // Only update if the current GPUInfo is not finalized.
   void UpdateGpuInfo(const content::GPUInfo& gpu_info);
 
+  void UpdateVidmemUsageStats(
+      const content::GPUVidmemUsageStats& vidmem_usage_stats);
+
   void AddLogMessage(Value* msg);
 
   // Insert disable-feature switches corresponding to preliminary gpu feature
   // flags into the renderer process command line.
   void AppendRendererCommandLine(CommandLine* command_line);
 
   // Insert switches into gpu process command line: kUseGL,
   // kDisableGLMultisampling.
   void AppendGpuCommandLine(CommandLine* command_line);
 
@@ skipping 56 matching lines @@
   FilePath swiftshader_path_;
 
   // Current card force-blacklisted due to GPU crashes, or disabled through
   // the --disable-gpu commandline switch.
   bool card_blacklisted_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuDataManagerImpl);
 };
 
 #endif  // CONTENT_BROWSER_GPU_GPU_DATA_MANAGER_IMPL_H_