WIP: Plumbing input event latency reporting through Mus GPU.

gpu/ipc/in_process_command_buffer.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_IPC_IN_PROCESS_COMMAND_BUFFER_H_
 #define GPU_IPC_IN_PROCESS_COMMAND_BUFFER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 63 matching lines @@
 
 // This class provides a thread-safe interface to the global GPU service (for
 // example GPU thread) when being run in single process mode.
 // However, the behavior for accessing one context (i.e. one instance of this
 // class) from different client threads is undefined.
 class GPU_EXPORT InProcessCommandBuffer : public CommandBuffer,
                                           public GpuControl,
                                           public ImageTransportSurfaceDelegate {
  public:
   class Service;
+  typedef base::Callback<void(const std::vector<ui::LatencyInfo>&)>
+      LatencyInfoCallback;
+
   explicit InProcessCommandBuffer(const scoped_refptr<Service>& service);
   ~InProcessCommandBuffer() override;
 
   // If |surface| is not null, use it directly; in this case, the command
   // buffer gpu thread must be the same as the client thread. Otherwise create
   // a new GLSurface.
   bool Initialize(scoped_refptr<gl::GLSurface> surface,
                   bool is_offscreen,
                   SurfaceHandle window,
                   const gles2::ContextCreationAttribHelper& attribs,
                   InProcessCommandBuffer* share_group,
                   GpuMemoryBufferManager* gpu_memory_buffer_manager,
                   ImageFactory* image_factory,
                   scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 
+  void SetLatencyInfo(const std::vector<ui::LatencyInfo>& latency_info);
+
   // CommandBuffer implementation:
   State GetLastState() override;
   void Flush(int32_t put_offset) override;
   void OrderingBarrier(int32_t put_offset) override;
   State WaitForTokenInRange(int32_t start, int32_t end) override;
   State WaitForGetOffsetInRange(int32_t start, int32_t end) override;
   void SetGetBuffer(int32_t shm_id) override;
   scoped_refptr<gpu::Buffer> CreateTransferBuffer(size_t size,
                                                   int32_t* id) override;
   void DestroyTransferBuffer(int32_t id) override;
@@ skipping 169 matching lines @@
   std::unique_ptr<gles2::GLES2Decoder> decoder_;
   scoped_refptr<gl::GLContext> context_;
   scoped_refptr<gl::GLSurface> surface_;
   scoped_refptr<SyncPointOrderData> sync_point_order_data_;
   std::unique_ptr<SyncPointClient> sync_point_client_;
   base::Closure context_lost_callback_;
   // Used to throttle PerformDelayedWorkOnGpuThread.
   bool delayed_work_pending_;
   ImageFactory* image_factory_;
 
+  LatencyInfoCallback latency_info_callback_;
+  std::vector<ui::LatencyInfo> latency_info_;
+
   // Members accessed on the client thread:
   GpuControlClient* gpu_control_client_;
 #if DCHECK_IS_ON()
   bool context_lost_;
 #endif
   State last_state_;
   base::Lock last_state_lock_;
   int32_t last_put_offset_;
   gpu::Capabilities capabilities_;
   GpuMemoryBufferManager* gpu_memory_buffer_manager_;
@@ skipping 33 matching lines @@
   base::WeakPtr<InProcessCommandBuffer> gpu_thread_weak_ptr_;
   base::WeakPtrFactory<InProcessCommandBuffer> client_thread_weak_ptr_factory_;
   base::WeakPtrFactory<InProcessCommandBuffer> gpu_thread_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessCommandBuffer);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_IN_PROCESS_COMMAND_BUFFER_H_