Plumb GpuSwapBuffers completion from Mus GPU thread to WS thread

components/mus/gles2/command_buffer_local.h

 // Copyright 2015 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 COMPONENTS_MUS_GLES2_COMMAND_BUFFER_LOCAL_H_
 #define COMPONENTS_MUS_GLES2_COMMAND_BUFFER_LOCAL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 81 matching lines @@
   gpu::CommandBufferId GetCommandBufferID() const override;
   int32_t GetExtraCommandBufferData() const override;
   uint64_t GenerateFenceSyncRelease() override;
   bool IsFenceSyncRelease(uint64_t release) override;
   bool IsFenceSyncFlushed(uint64_t release) override;
   bool IsFenceSyncFlushReceived(uint64_t release) override;
   void SignalSyncToken(const gpu::SyncToken& sync_token,
                        const base::Closure& callback) override;
   bool CanWaitUnverifiedSyncToken(const gpu::SyncToken* sync_token) override;
 
-  // CommandBufferDriver::Client implementation:
+ private:
+  // CommandBufferDriver::Client implementation. All called on GPU thread.
   void DidLoseContext(uint32_t reason) override;
   void UpdateVSyncParameters(int64_t timebase, int64_t interval) override;
+  void OnGpuCompletedSwapBuffers(gfx::SwapResult result) override;
 
- private:
   ~CommandBufferLocal() override;
 
   gpu::CommandBufferSharedState* shared_state() const { return shared_state_; }
   void TryUpdateState();
   void MakeProgressAndUpdateState();
 
   // Helper functions are called in the GPU thread.
   void InitializeOnGpuThread(base::WaitableEvent* event, bool* result);
   bool FlushOnGpuThread(int32_t put_offset, uint32_t order_num);
   bool SetGetBufferOnGpuThread(int32_t buffer);
@@ skipping 10 matching lines @@
                               int32_t internal_format);
   bool DestroyImageOnGpuThread(int32_t id);
   bool MakeProgressOnGpuThread(base::WaitableEvent* event,
                                gpu::CommandBuffer::State* state);
   bool DeleteOnGpuThread(base::WaitableEvent* event);
   bool SignalQueryOnGpuThread(uint32_t query_id, const base::Closure& callback);
 
   // Helper functions are called in the client thread.
   void DidLoseContextOnClientThread(uint32_t reason);
   void UpdateVSyncParametersOnClientThread(int64_t timebase, int64_t interval);
+  void OnGpuCompletedSwapBuffersOnClientThread(gfx::SwapResult result);
 
   gfx::AcceleratedWidget widget_;
   scoped_refptr<GpuState> gpu_state_;
   scoped_ptr<CommandBufferDriver> driver_;
   CommandBufferLocalClient* client_;
   scoped_refptr<base::SingleThreadTaskRunner> client_thread_task_runner_;
 
   // Members accessed on the client thread:
   gpu::CommandBuffer::State last_state_;
   mojo::ScopedSharedBufferHandle shared_state_handle_;
@@ skipping 13 matching lines @@
   // This weak factory will be invalidated in the client thread, so all weak
   // pointers have to be dereferenced in the client thread too.
   base::WeakPtrFactory<CommandBufferLocal> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CommandBufferLocal);
 };
 
 }  //  namespace mus
 
 #endif  // COMPONENTS_MUS_GLES2_COMMAND_BUFFER_LOCAL_H_