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

components/viz/client/BUILD.gn

 # 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.
 
 source_set("client") {
   sources = [
     "client_layer_tree_frame_sink.cc",
     "client_layer_tree_frame_sink.h",
     "client_shared_bitmap_manager.cc",
     "client_shared_bitmap_manager.h",
+    "hit_test_data_provider.h",
     "local_surface_id_provider.cc",
     "local_surface_id_provider.h",
   ]
 
   public_deps = [
     "//base",
     "//cc",
     "//cc/ipc:interfaces",
     "//cc/surfaces",
     "//mojo/public/cpp/bindings",
   ]
 }