Use HitTestAggregator in GpuRootCompositorFrameSink

components/viz/service/frame_sinks/gpu_root_compositor_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_SERVICE_FRAME_SINKS_GPU_ROOT_COMPOSITOR_FRAME_SINK_H_
 #define COMPONENTS_VIZ_SERVICE_FRAME_SINKS_GPU_ROOT_COMPOSITOR_FRAME_SINK_H_
 
 #include "cc/ipc/frame_sink_manager.mojom.h"
 #include "cc/ipc/mojo_compositor_frame_sink.mojom.h"
 #include "cc/surfaces/compositor_frame_sink_support_client.h"
 #include "cc/surfaces/display_client.h"
 #include "cc/surfaces/local_surface_id.h"
 #include "cc/surfaces/surface_id.h"
+#include "components/viz/hit_test/hit_test_aggregator.h"
 #include "components/viz/service/frame_sinks/gpu_compositor_frame_sink_delegate.h"
 #include "mojo/public/cpp/bindings/associated_binding.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 namespace cc {
 class BeginFrameSource;
 class CompositorFrameSinkSupport;
 class Display;
 class SurfaceManager;
 }
@@ skipping 70 matching lines @@
   bool client_connection_lost_ = false;
   bool private_connection_lost_ = false;
 
   cc::mojom::MojoCompositorFrameSinkClientPtr client_;
   mojo::AssociatedBinding<cc::mojom::MojoCompositorFrameSink>
       compositor_frame_sink_binding_;
   mojo::Binding<cc::mojom::MojoCompositorFrameSinkPrivate>
       compositor_frame_sink_private_binding_;
   mojo::AssociatedBinding<cc::mojom::DisplayPrivate> display_private_binding_;
 
+  std::unique_ptr<hit_test::HitTestAggregator> hit_test_aggregator_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuRootCompositorFrameSink);
 };
 
 }  // namespace viz
 
 #endif  // COMPONENTS_VIZ_SERVICE_FRAME_SINKS_GPU_ROOT_COMPOSITOR_FRAME_SINK_H_