exo: Directly create GpuMemoryBufferImpl when a handle is available.

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 29 matching lines @@
 
   static uint32_t GetImageTextureTarget(gfx::BufferFormat format,
                                         gfx::BufferUsage usage);
 
   // Overridden from gpu::GpuMemoryBufferManager:
   std::unique_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBuffer(
       const gfx::Size& size,
       gfx::BufferFormat format,
       gfx::BufferUsage usage,
       gpu::SurfaceHandle surface_handle) override;
-  std::unique_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBufferFromHandle(
-      const gfx::GpuMemoryBufferHandle& handle,
-      const gfx::Size& size,
-      gfx::BufferFormat format) override;
   void SetDestructionSyncToken(gfx::GpuMemoryBuffer* buffer,
                                const gpu::SyncToken& sync_token) override;
 
   // Overridden from base::trace_event::MemoryDumpProvider:
   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
                     base::trace_event::ProcessMemoryDump* pmd) override;
 
   void AllocateGpuMemoryBufferForChildProcess(
       gfx::GpuMemoryBufferId id,
       const gfx::Size& size,
@@ skipping 22 matching lines @@
     ~BufferInfo();
 
     gfx::Size size;
     gfx::GpuMemoryBufferType type = gfx::EMPTY_BUFFER;
     gfx::BufferFormat format = gfx::BufferFormat::RGBA_8888;
     gfx::BufferUsage usage = gfx::BufferUsage::GPU_READ;
     int gpu_host_id = 0;
   };
 
   struct CreateGpuMemoryBufferRequest;
-  struct CreateGpuMemoryBufferFromHandleRequest;
 
   using CreateDelegate = base::Callback<void(GpuProcessHost* host,
                                              gfx::GpuMemoryBufferId id,
                                              const gfx::Size& size,
                                              gfx::BufferFormat format,
                                              gfx::BufferUsage usage,
                                              int client_id,
                                              const CreateCallback& callback)>;
 
   std::unique_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBufferForSurface(
       const gfx::Size& size,
       gfx::BufferFormat format,
       gfx::BufferUsage usage,
       gpu::SurfaceHandle surface_handle);
 
   // Functions that handle synchronous buffer creation requests.
   void HandleCreateGpuMemoryBufferOnIO(CreateGpuMemoryBufferRequest* request);
-  void HandleCreateGpuMemoryBufferFromHandleOnIO(
-      CreateGpuMemoryBufferFromHandleRequest* request);
   void HandleGpuMemoryBufferCreatedOnIO(
       CreateGpuMemoryBufferRequest* request,
       const gfx::GpuMemoryBufferHandle& handle);
 
   // Functions that implement asynchronous buffer creation.
   void CreateGpuMemoryBufferOnIO(const CreateDelegate& create_delegate,
                                  gfx::GpuMemoryBufferId id,
                                  const gfx::Size& size,
                                  gfx::BufferFormat format,
                                  gfx::BufferUsage usage,
@@ skipping 25 matching lines @@
   using BufferMap = base::hash_map<gfx::GpuMemoryBufferId, BufferInfo>;
   using ClientMap = base::hash_map<int, BufferMap>;
   ClientMap clients_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserGpuMemoryBufferManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_