[mus+ash] Implements hit-test client in Aura

components/viz/client/client_layer_tree_frame_sink.h

 // Copyright 2017 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_VIZ_CLIENT_CLIENT_LAYER_TREE_FRAME_SINK_H_
 #define COMPONENTS_VIZ_CLIENT_CLIENT_LAYER_TREE_FRAME_SINK_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "cc/ipc/compositor_frame_sink.mojom.h"
 #include "cc/output/context_provider.h"
 #include "cc/output/layer_tree_frame_sink.h"
 #include "cc/scheduler/begin_frame_source.h"
 #include "cc/surfaces/local_surface_id_allocator.h"
 #include "cc/surfaces/surface_id.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
+namespace aura {
+class HitTestDataProviderMusTest;
+}
+
 namespace viz {
 
+class HitTestDataProvider;
 class LocalSurfaceIdProvider;
 
 class ClientLayerTreeFrameSink : public cc::LayerTreeFrameSink,
                                  public cc::mojom::CompositorFrameSinkClient,
                                  public cc::ExternalBeginFrameSourceClient {
  public:
   ClientLayerTreeFrameSink(
       scoped_refptr<cc::ContextProvider> context_provider,
       scoped_refptr<cc::ContextProvider> worker_context_provider,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
       cc::SharedBitmapManager* shared_bitmap_manager,
       std::unique_ptr<cc::SyntheticBeginFrameSource>
           synthetic_begin_frame_source,
       cc::mojom::CompositorFrameSinkPtrInfo compositor_frame_sink_info,
       cc::mojom::CompositorFrameSinkClientRequest client_request,
+      std::unique_ptr<HitTestDataProvider> hit_test_data_provider,
       std::unique_ptr<LocalSurfaceIdProvider> local_surface_id_provider,
       bool enable_surface_synchronization);
 
   ClientLayerTreeFrameSink(
       scoped_refptr<cc::VulkanContextProvider> vulkan_context_provider,
       std::unique_ptr<cc::SyntheticBeginFrameSource>
           synthetic_begin_frame_source,
       cc::mojom::CompositorFrameSinkPtrInfo compositor_frame_sink_info,
       cc::mojom::CompositorFrameSinkClientRequest client_request,
+      std::unique_ptr<HitTestDataProvider> hit_test_data_provider,
       std::unique_ptr<LocalSurfaceIdProvider> local_surface_id_provider,
       bool enable_surface_synchronization);
 
   ~ClientLayerTreeFrameSink() override;
 
   base::WeakPtr<ClientLayerTreeFrameSink> GetWeakPtr();
 
   // cc::LayerTreeFrameSink implementation.
   bool BindToClient(cc::LayerTreeFrameSinkClient* client) override;
   void DetachFromClient() override;
   void SetLocalSurfaceId(const cc::LocalSurfaceId& local_surface_id) override;
   void SubmitCompositorFrame(cc::CompositorFrame frame) override;
   void DidNotProduceFrame(const cc::BeginFrameAck& ack) override;
 
  private:
+  friend class aura::HitTestDataProviderMusTest;
+
   // cc::mojom::CompositorFrameSinkClient implementation:
   void DidReceiveCompositorFrameAck(
       const std::vector<cc::ReturnedResource>& resources) override;
   void OnBeginFrame(const cc::BeginFrameArgs& begin_frame_args) override;
   void ReclaimResources(
       const std::vector<cc::ReturnedResource>& resources) override;
 
   // cc::ExternalBeginFrameSourceClient implementation.
   void OnNeedsBeginFrames(bool needs_begin_frames) override;
 
   static void OnMojoConnectionError(uint32_t custom_reason,
                                     const std::string& description);
 
   cc::LocalSurfaceId local_surface_id_;
+  std::unique_ptr<HitTestDataProvider> hit_test_data_provider_;
   std::unique_ptr<LocalSurfaceIdProvider> local_surface_id_provider_;
   std::unique_ptr<cc::ExternalBeginFrameSource> begin_frame_source_;
   std::unique_ptr<cc::SyntheticBeginFrameSource> synthetic_begin_frame_source_;
   cc::mojom::CompositorFrameSinkPtrInfo compositor_frame_sink_info_;
   cc::mojom::CompositorFrameSinkClientRequest client_request_;
   cc::mojom::CompositorFrameSinkPtr compositor_frame_sink_;
   mojo::Binding<cc::mojom::CompositorFrameSinkClient> client_binding_;
   THREAD_CHECKER(thread_checker_);
   const bool enable_surface_synchronization_;
 
   base::WeakPtrFactory<ClientLayerTreeFrameSink> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientLayerTreeFrameSink);
 };
 
 }  // namespace viz
 
 #endif  // COMPONENTS_VIZ_CLIENT_CLIENT_LAYER_TREE_FRAME_SINK_H_