Re-land: Toggle spoken feedback if two fingers are held down.

ui/chromeos/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("//testing/test.gni")
 
 assert(is_chromeos)
 
 component("chromeos") {
   output_name = "ui_chromeos"
   sources = [
     "accelerometer/accelerometer_util.cc",
     "accelerometer/accelerometer_util.h",
     "ime/candidate_view.cc",
     "ime/candidate_view.h",
     "ime/candidate_window_view.cc",
     "ime/candidate_window_view.h",
     "ime/infolist_window.cc",
     "ime/infolist_window.h",
     "ime/input_method_menu_item.cc",
     "ime/input_method_menu_item.h",
     "ime/input_method_menu_manager.cc",
     "ime/input_method_menu_manager.h",
     "ime/mode_indicator_view.cc",
     "ime/mode_indicator_view.h",
+    "touch_accessibility_enabler.cc",
+    "touch_accessibility_enabler.h",
     "touch_exploration_controller.cc",
     "touch_exploration_controller.h",
     "user_activity_power_manager_notifier.cc",
     "user_activity_power_manager_notifier.h",
   ]
   defines = [ "UI_CHROMEOS_IMPLEMENTATION" ]
   deps = [
     "//base",
     "//base/third_party/dynamic_annotations",
     "//chromeos:chromeos",
@@ skipping 18 matching lines @@
   ]
 }
 
 test("ui_chromeos_unittests") {
   sources = [
     "ime/candidate_view_unittest.cc",
     "ime/candidate_window_view_unittest.cc",
     "ime/input_method_menu_item_unittest.cc",
     "ime/input_method_menu_manager_unittest.cc",
     "run_all_unittests.cc",
+    "touch_accessibility_enabler_unittest.cc",
     "touch_exploration_controller_unittest.cc",
   ]
   deps = [
     ":chromeos",
     "//base/test:test_support",
     "//chromeos",
     "//skia",
     "//testing/gtest",
     "//ui/aura:test_support",
     "//ui/compositor",
     "//ui/events:test_support",
     "//ui/gl:test_support",
     "//ui/message_center",
     "//ui/resources:ui_test_pak",
     "//ui/views",
     "//ui/views:test_support",
   ]
   data = [
     "$root_out_dir/locales/en-US.pak",
     "$root_out_dir/ui_test.pak",
   ]
 }