content: Fix lost context handling when using native GpuMemoryBuffers.

content/browser/gpu/browser_gpu_channel_host_factory.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_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_
 #define CONTENT_BROWSER_GPU_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_
 
 #include <map>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
-#include "content/common/gpu/client/gpu_memory_buffer_factory_host.h"
 #include "ipc/message_filter.h"
 
 namespace content {
 class BrowserGpuMemoryBufferManager;
 
 class CONTENT_EXPORT BrowserGpuChannelHostFactory
-    : public GpuChannelHostFactory,
-      public GpuMemoryBufferFactoryHost {
+    : public GpuChannelHostFactory {
  public:
   static void Initialize(bool establish_gpu_channel);
   static void Terminate();
   static BrowserGpuChannelHostFactory* instance() { return instance_; }
 
-  static void EnableGpuMemoryBufferFactoryUsage(
-      gfx::GpuMemoryBuffer::Usage usage);
-  static bool IsGpuMemoryBufferFactoryUsageEnabled(
-      gfx::GpuMemoryBuffer::Usage usage);
-  static uint32 GetImageTextureTarget(gfx::GpuMemoryBuffer::Format format,
-                                      gfx::GpuMemoryBuffer::Usage usage);
-
   // Overridden from GpuChannelHostFactory:
   bool IsMainThread() override;
   scoped_refptr<base::SingleThreadTaskRunner> GetIOThreadTaskRunner() override;
   scoped_ptr<base::SharedMemory> AllocateSharedMemory(size_t size) override;
   CreateCommandBufferResult CreateViewCommandBuffer(
       int32 surface_id,
       const GPUCreateCommandBufferConfig& init_params,
       int32 route_id) override;
 
-  // Overridden from GpuMemoryBufferFactoryHost:
-  bool IsGpuMemoryBufferConfigurationSupported(
-      gfx::GpuMemoryBuffer::Format format,
-      gfx::GpuMemoryBuffer::Usage usage) override;
-  void CreateGpuMemoryBuffer(
-      gfx::GpuMemoryBufferId id,
-      const gfx::Size& size,
-      gfx::GpuMemoryBuffer::Format format,
-      gfx::GpuMemoryBuffer::Usage usage,
-      int client_id,
-      int32 surface_id,
-      const CreateGpuMemoryBufferCallback& callback) override;
-  void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
-                              int client_id,
-                              int32 sync_point) override;
-
   int GpuProcessHostId() { return gpu_host_id_; }
 #if !defined(OS_ANDROID)
   GpuChannelHost* EstablishGpuChannelSync(
       CauseForGpuLaunch cause_for_gpu_launch);
 #endif
   void EstablishGpuChannel(CauseForGpuLaunch cause_for_gpu_launch,
                            const base::Closure& callback);
   GpuChannelHost* GetGpuChannel();
   int GetGpuChannelId() { return gpu_client_id_; }
 
   // Used to skip GpuChannelHost tests when there can be no GPU process.
   static bool CanUseForTesting();
 
  private:
   struct CreateRequest;
   class EstablishRequest;
 
   BrowserGpuChannelHostFactory();
   ~BrowserGpuChannelHostFactory() override;
 
   void GpuChannelEstablished();
   void CreateViewCommandBufferOnIO(
       CreateRequest* request,
       int32 surface_id,
       const GPUCreateCommandBufferConfig& init_params);
   static void CommandBufferCreatedOnIO(CreateRequest* request,
                                        CreateCommandBufferResult result);
   static void AddFilterOnIO(int gpu_host_id,
                             scoped_refptr<IPC::MessageFilter> filter);
-  void DestroyGpuMemoryBufferOnIO(gfx::GpuMemoryBufferId id,
-                                  int client_id,
-                                  int32 sync_point);
-  void OnGpuMemoryBufferCreated(uint32 request_id,
-                                const gfx::GpuMemoryBufferHandle& handle);
 
   const int gpu_client_id_;
   scoped_ptr<base::WaitableEvent> shutdown_event_;
   scoped_refptr<GpuChannelHost> gpu_channel_;
-  scoped_ptr<BrowserGpuMemoryBufferManager> gpu_memory_buffer_manager_;
   int gpu_host_id_;
   scoped_refptr<EstablishRequest> pending_request_;
   std::vector<base::Closure> established_callbacks_;
-  uint32 next_create_gpu_memory_buffer_request_id_;
-  typedef std::map<uint32, CreateGpuMemoryBufferCallback>
-      CreateGpuMemoryBufferCallbackMap;
-  CreateGpuMemoryBufferCallbackMap create_gpu_memory_buffer_requests_;
 
   static BrowserGpuChannelHostFactory* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserGpuChannelHostFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_