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

ui/aura/mus/window_port_mus.cc

 // 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.
 
 #include "ui/aura/mus/window_port_mus.h"
 
 #include "base/memory/ptr_util.h"
 #include "components/viz/client/local_surface_id_provider.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/transient_window_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/mus/client_surface_embedder.h"
+#include "ui/aura/mus/hit_test_data_provider_mus.h"
 #include "ui/aura/mus/property_converter.h"
 #include "ui/aura/mus/window_tree_client.h"
 #include "ui/aura/mus/window_tree_client_delegate.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/class_property.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/gfx/geometry/dip_util.h"
@@ skipping 89 matching lines @@
       mojo::MakeRequest(&sink_info);
   cc::mojom::CompositorFrameSinkClientPtr client;
   cc::mojom::CompositorFrameSinkClientRequest client_request =
       mojo::MakeRequest(&client);
   constexpr bool enable_surface_synchronization = true;
   auto layer_tree_frame_sink = base::MakeUnique<viz::ClientLayerTreeFrameSink>(
       std::move(context_provider), nullptr /* worker_context_provider */,
       gpu_memory_buffer_manager, nullptr /* shared_bitmap_manager */,
       nullptr /* synthetic_begin_frame_source */, std::move(sink_info),
       std::move(client_request),
+      base::MakeUnique<HitTestDataProviderMus>(window_),
       base::MakeUnique<viz::DefaultLocalSurfaceIdProvider>(),
       enable_surface_synchronization);
   window_tree_client_->AttachCompositorFrameSink(
       server_id(), std::move(sink_request), std::move(client));
   return layer_tree_frame_sink;
 }
 
 WindowPortMus::ServerChangeIdType WindowPortMus::ScheduleChange(
     const ServerChangeType type,
     const ServerChangeData& data) {
@@ skipping 452 matching lines @@
   if (!client_surface_embedder_) {
     client_surface_embedder_ = base::MakeUnique<ClientSurfaceEmbedder>(
         window_, window_tree_client_->normal_client_area_insets_);
   }
 
   client_surface_embedder_->SetPrimarySurfaceInfo(primary_surface_info_);
   client_surface_embedder_->SetFallbackSurfaceInfo(fallback_surface_info_);
 }
 
 }  // namespace aura