content: Add GpuMemoryBuffer MemoryDumpProvider implementation.

content/browser/gpu/browser_gpu_memory_buffer_manager.h

 // Copyright 2014 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_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_
 #define CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
+#include "base/trace_event/memory_dump_provider.h"
 #include "content/common/content_export.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
 
 namespace content {
 class GpuMemoryBufferFactoryHost;
 class GpuMemoryBufferImpl;
 
 class CONTENT_EXPORT BrowserGpuMemoryBufferManager
-    : public gpu::GpuMemoryBufferManager {
+    : public gpu::GpuMemoryBufferManager,
+      public base::trace_event::MemoryDumpProvider {
  public:
   typedef base::Callback<void(const gfx::GpuMemoryBufferHandle& handle)>
       AllocationCallback;
 
   BrowserGpuMemoryBufferManager(
       GpuMemoryBufferFactoryHost* gpu_memory_buffer_factory_host,
       int gpu_client_id);
   ~BrowserGpuMemoryBufferManager() override;
 
   static BrowserGpuMemoryBufferManager* current();
 
   // Overridden from gpu::GpuMemoryBufferManager:
   scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
       gfx::GpuMemoryBuffer::Usage usage) override;
   gfx::GpuMemoryBuffer* GpuMemoryBufferFromClientBuffer(
       ClientBuffer buffer) override;
   void SetDestructionSyncPoint(gfx::GpuMemoryBuffer* buffer,
                                uint32 sync_point) override;
 
+  // Overridden from base::trace_event::MemoryDumpProvider:
+  bool DumpInto(base::trace_event::ProcessMemoryDump* pmd) override;
+  const char* GetFriendlyName() const override;
+
   // Virtual for testing.
   virtual scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBufferForScanout(
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
       int32 surface_id);
+
   void AllocateGpuMemoryBufferForChildProcess(
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
       gfx::GpuMemoryBuffer::Usage usage,
       base::ProcessHandle child_process_handle,
       int child_client_id,
       const AllocationCallback& callback);
   void ChildProcessDeletedGpuMemoryBuffer(
       gfx::GpuMemoryBufferId id,
       base::ProcessHandle child_process_handle,
       int child_client_id,
       uint32 sync_point);
   void ProcessRemoved(base::ProcessHandle process_handle, int client_id);
 
  private:
+  struct BufferInfo {
+    BufferInfo()
+        : format(gfx::GpuMemoryBuffer::RGBA_8888), type(gfx::EMPTY_BUFFER) {}
+    BufferInfo(const gfx::Size& size,
+               gfx::GpuMemoryBuffer::Format format,
+               gfx::GpuMemoryBufferType type)
+        : size(size), format(format), type(type) {}
+
+    gfx::Size size;
+    gfx::GpuMemoryBuffer::Format format;
+    gfx::GpuMemoryBufferType type;
+  };
   struct AllocateGpuMemoryBufferRequest;
 
   scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBufferCommon(
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
       gfx::GpuMemoryBuffer::Usage usage,
       int32 surface_id);
   void AllocateGpuMemoryBufferOnIO(AllocateGpuMemoryBufferRequest* request);
   void GpuMemoryBufferAllocatedOnIO(AllocateGpuMemoryBufferRequest* request,
                                     const gfx::GpuMemoryBufferHandle& handle);
   void GpuMemoryBufferDeleted(gfx::GpuMemoryBufferId id,
                               int client_id,
                               uint32 sync_point);
   void GpuMemoryBufferAllocatedForChildProcess(
       int child_client_id,
       const AllocationCallback& callback,
       const gfx::GpuMemoryBufferHandle& handle);
 
   GpuMemoryBufferFactoryHost* gpu_memory_buffer_factory_host_;
   int gpu_client_id_;
 
-  typedef base::hash_map<gfx::GpuMemoryBufferId, gfx::GpuMemoryBufferType>
-      BufferMap;
+  typedef base::hash_map<gfx::GpuMemoryBufferId, BufferInfo> BufferMap;
   typedef base::hash_map<int, BufferMap> ClientMap;
   ClientMap clients_;
 
   base::WeakPtrFactory<BrowserGpuMemoryBufferManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserGpuMemoryBufferManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_