Initial support for accessibility actions on ARC.

ui/accessibility/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//tools/json_schema_compiler/json_schema_api.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
 component("accessibility") {
   sources = [
     "ax_action_data.cc",
     "ax_action_data.h",
+    "ax_host_delegate.cc",
+    "ax_host_delegate.h",
     "ax_node.cc",
     "ax_node.h",
     "ax_node_data.cc",
     "ax_node_data.h",
     "ax_node_position.cc",
     "ax_node_position.h",
     "ax_position.h",
     "ax_range.h",
     "ax_relative_bounds.cc",
     "ax_relative_bounds.h",
@@ skipping 139 matching lines @@
 
 fuzzer_test("ax_tree_fuzzer") {
   sources = [
     "ax_tree_fuzzer.cc",
   ]
 
   deps = [
     ":accessibility",
   ]
 }