gpu: Reuse transfer buffers more aggresively

gpu/command_buffer/service/async_pixel_transfer_manager_sync.cc

 // 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.
 
 #include "gpu/command_buffer/service/async_pixel_transfer_manager_sync.h"
 
 #include "gpu/command_buffer/service/async_pixel_transfer_delegate.h"
 
 namespace gpu {
 
@@ skipping 89 matching lines @@
 AsyncPixelTransferManagerSync::SharedState::~SharedState() {}
 
 AsyncPixelTransferManagerSync::AsyncPixelTransferManagerSync() {}
 
 AsyncPixelTransferManagerSync::~AsyncPixelTransferManagerSync() {}
 
 void AsyncPixelTransferManagerSync::BindCompletedAsyncTransfers() {
   // Everything is already bound.
 }
 
+void AsyncPixelTransferManagerSync::AsyncRunWhenCompleted(
+    base::Callback<void()> callback) {
+  callback.Run();
+}
+
 void AsyncPixelTransferManagerSync::AsyncNotifyCompletion(
     const AsyncMemoryParams& mem_params,
     AsyncPixelTransferCompletionObserver* observer) {
   observer->DidComplete(mem_params);
 }
 
 uint32 AsyncPixelTransferManagerSync::GetTextureUploadCount() {
   return shared_state_.texture_upload_count;
 }
 
 base::TimeDelta AsyncPixelTransferManagerSync::GetTotalTextureUploadTime() {
   return shared_state_.total_texture_upload_time;
 }
 
 void AsyncPixelTransferManagerSync::ProcessMorePendingTransfers() {
 }
 
 bool AsyncPixelTransferManagerSync::NeedsProcessMorePendingTransfers() {
   return false;
 }
 
 AsyncPixelTransferDelegate*
 AsyncPixelTransferManagerSync::CreatePixelTransferDelegateImpl(
     gles2::TextureRef* ref,
     const AsyncTexImage2DParams& define_params) {
   return new AsyncPixelTransferDelegateSync(&shared_state_);
 }
 
 }  // namespace gpu