gpu: Reuse transfer buffers more aggresively

gpu/command_buffer/service/async_pixel_transfer_manager_share_group.h

 // Copyright 2013 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 GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_MANAGER_SHARE_GROUP_H_
 #define GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_MANAGER_SHARE_GROUP_H_
 
 #include "gpu/command_buffer/service/async_pixel_transfer_manager.h"
 
 #include "base/memory/ref_counted.h"
 
 namespace gfx {
 class GLContext;
 }
 
 namespace gpu {
 class AsyncPixelTransferDelegateShareGroup;
 class AsyncPixelTransferUploadStats;
 
 class AsyncPixelTransferManagerShareGroup : public AsyncPixelTransferManager {
  public:
   explicit AsyncPixelTransferManagerShareGroup(gfx::GLContext* context);
   virtual ~AsyncPixelTransferManagerShareGroup();
 
   // AsyncPixelTransferManager implementation:
   virtual void BindCompletedAsyncTransfers() OVERRIDE;
+  virtual void AsyncRunWhenCompleted(base::Callback<void()> callback) OVERRIDE;

[reveman, 2014/01/22 17:30:04]

where's the implementation of this?

   virtual void AsyncNotifyCompletion(
       const AsyncMemoryParams& mem_params,
       AsyncPixelTransferCompletionObserver* observer) OVERRIDE;
   virtual uint32 GetTextureUploadCount() OVERRIDE;
   virtual base::TimeDelta GetTotalTextureUploadTime() OVERRIDE;
   virtual void ProcessMorePendingTransfers() OVERRIDE;
   virtual bool NeedsProcessMorePendingTransfers() OVERRIDE;
 
   // State shared between Managers and Delegates.
   struct SharedState {
@@ skipping 13 matching lines @@
       const AsyncTexImage2DParams& define_params) OVERRIDE;
 
   SharedState shared_state_;
 
   DISALLOW_COPY_AND_ASSIGN(AsyncPixelTransferManagerShareGroup);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_MANAGER_SHARE_GROUP_H_