gpu: Add callback for yielding command buffer execution.

gpu/ipc/service/gpu_command_buffer_stub.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 GPU_IPC_SERVICE_GPU_COMMAND_BUFFER_STUB_H_
 #define GPU_IPC_SERVICE_GPU_COMMAND_BUFFER_STUB_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <deque>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "gpu/command_buffer/common/command_buffer_id.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/common/gpu_memory_allocation.h"
 #include "gpu/command_buffer/service/command_buffer_service.h"
-#include "gpu/command_buffer/service/command_executor.h"
 #include "gpu/command_buffer/service/context_group.h"
 #include "gpu/command_buffer/service/sequence_id.h"
 #include "gpu/gpu_export.h"
 #include "gpu/ipc/common/surface_handle.h"
 #include "gpu/ipc/service/gpu_memory_manager.h"
 #include "gpu/ipc/service/image_transport_surface_delegate.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "ui/events/latency_info.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 #include "ui/gfx/swap_result.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/gl/gpu_preference.h"
 #include "url/gurl.h"
 
+struct GPUCreateCommandBufferConfig;
+struct GpuCommandBufferMsg_CreateImage_Params;
+
 namespace gl {
 class GLShareGroup;
 }
 
 namespace gpu {
 struct Mailbox;
 struct SyncToken;
+struct WaitForCommandState;
+class CommandExecutor;
+class GpuChannel;
 class SyncPointClientState;
-}
-
-struct GPUCreateCommandBufferConfig;
-struct GpuCommandBufferMsg_CreateImage_Params;
-
-namespace gpu {
-
-class GpuChannel;
-struct WaitForCommandState;
 
 class GPU_EXPORT GpuCommandBufferStub
     : public IPC::Listener,
       public IPC::Sender,
       public ImageTransportSurfaceDelegate,
       public base::SupportsWeakPtr<GpuCommandBufferStub> {
  public:
   class DestructionObserver {
    public:
     // Called in Destroy(), before the context/surface are released.
@@ skipping 187 matching lines @@
 
   std::unique_ptr<WaitForCommandState> wait_for_token_;
   std::unique_ptr<WaitForCommandState> wait_for_get_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuCommandBufferStub);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_COMMAND_BUFFER_STUB_H_