WIP: Plumbing input event latency reporting through Mus GPU.

cc/output/in_process_context_provider.h

 // Copyright 2016 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 CC_OUTPUT_IN_PROCESS_CONTEXT_PROVIDER_H_
 #define CC_OUTPUT_IN_PROCESS_CONTEXT_PROVIDER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 26 matching lines @@
     : public NON_EXPORTED_BASE(ContextProvider) {
  public:
   InProcessContextProvider(
       scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
       gpu::SurfaceHandle widget,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
       gpu::ImageFactory* image_factory,
       const gpu::SharedMemoryLimits& limits,
       InProcessContextProvider* shared_context);
 
+  // ContextProvider:
   bool BindToCurrentThread() override;
   gpu::gles2::GLES2Interface* ContextGL() override;
   gpu::ContextSupport* ContextSupport() override;
   class GrContext* GrContext() override;
   ContextCacheController* CacheController() override;
   void InvalidateGrContext(uint32_t state) override;
   base::Lock* GetLock() override;
   gpu::Capabilities ContextCapabilities() override;
   void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) override;
 
   uint32_t GetCopyTextureInternalFormat();
 
   void SetSwapBuffersCompletionCallback(
       const gpu::InProcessCommandBuffer::SwapBuffersCompletionCallback&
           callback);
 
   void SetUpdateVSyncParametersCallback(
       const gpu::InProcessCommandBuffer::UpdateVSyncParametersCallback&
           callback);
 
+  void SetLatencyInfo(const std::vector<ui::LatencyInfo>& latency_info);
+
  protected:
   friend class base::RefCountedThreadSafe<InProcessContextProvider>;
   ~InProcessContextProvider() override;
 
  private:
   const gpu::gles2::ContextCreationAttribHelper attributes_;
 
   base::Lock context_lock_;
   std::unique_ptr<gpu::GLInProcessContext> context_;
   std::unique_ptr<skia_bindings::GrContextForGLES2Interface> gr_context_;
   std::unique_ptr<ContextCacheController> cache_controller_;
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_IN_PROCESS_CONTEXT_PROVIDER_H_