Introduce ash mojo interface for lock screen action handlers

chrome/browser/ui/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/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 1352 matching lines @@
       "ash/launcher/launcher_extension_app_updater.cc",
       "ash/launcher/launcher_extension_app_updater.h",
       "ash/launcher/launcher_favicon_loader.cc",
       "ash/launcher/launcher_favicon_loader.h",
       "ash/launcher/multi_profile_app_window_launcher_controller.cc",
       "ash/launcher/multi_profile_app_window_launcher_controller.h",
       "ash/launcher/multi_profile_browser_status_monitor.cc",
       "ash/launcher/multi_profile_browser_status_monitor.h",
       "ash/launcher/settings_window_observer.cc",
       "ash/launcher/settings_window_observer.h",
+      "ash/lock_screen_action_handler.cc",
+      "ash/lock_screen_action_handler.h",
       "ash/media_client.cc",
       "ash/media_client.h",
       "ash/multi_user/multi_user_context_menu.h",
       "ash/multi_user/multi_user_context_menu_chromeos.cc",
       "ash/multi_user/multi_user_notification_blocker_chromeos.cc",
       "ash/multi_user/multi_user_notification_blocker_chromeos.h",
       "ash/multi_user/multi_user_util.cc",
       "ash/multi_user/multi_user_util.h",
       "ash/multi_user/multi_user_warning_dialog.cc",
       "ash/multi_user/multi_user_warning_dialog.h",
@@ skipping 2188 matching lines @@
       "test/test_confirm_bubble_model.cc",
       "test/test_confirm_bubble_model.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }