aura: Add back XInputHierarchyChangedEventListener for aura and remove stubs.

chrome/chrome_browser.gypi

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 790 matching lines @@
         'browser/chromeos/views/dropdown_button.cc',
         'browser/chromeos/views/dropdown_button.h',
         'browser/chromeos/volume_bubble.cc',
         'browser/chromeos/volume_bubble.h',
         'browser/chromeos/web_socket_proxy.cc',
         'browser/chromeos/web_socket_proxy.h',
         'browser/chromeos/web_socket_proxy_controller.cc',
         'browser/chromeos/web_socket_proxy_controller.h',
         'browser/chromeos/xinput_hierarchy_changed_event_listener.cc',
         'browser/chromeos/xinput_hierarchy_changed_event_listener.h',
+        'browser/chromeos/xinput_hierarchy_changed_event_listener_aura.cc',
+        'browser/chromeos/xinput_hierarchy_changed_event_listener_gtk.cc',
         'browser/command_updater.cc',
         'browser/command_updater.h',
         'browser/component_updater/component_updater_configurator.cc',
         'browser/component_updater/component_updater_configurator.h',
         'browser/component_updater/component_unpacker.cc',
         'browser/component_updater/component_unpacker.h',
         'browser/component_updater/component_updater_service.cc',
         'browser/component_updater/component_updater_service.h',
         'browser/component_updater/flash_component_installer.h',
         'browser/component_updater/npapi_flash_component_installer.cc',
@@ skipping 4361 matching lines @@
             ['exclude', '^browser/chromeos/login/screen_locker.cc'],
             ['exclude', '^browser/chromeos/login/screen_lock_view.cc'],
             ['exclude', '^browser/chromeos/login/shutdown_button.cc'],
             ['exclude', '^browser/chromeos/login/username_view.cc'],
             ['exclude', '^browser/chromeos/login/user_view.cc'],
             ['exclude', '^browser/chromeos/login/views_login_display.cc'],
             ['exclude', '^browser/chromeos/login/views_login_display_host.cc'],
             ['exclude', '^browser/chromeos/login/webui_screen_locker.cc'],
             ['exclude', '^browser/chromeos/login/wizard_in_process_browser_test.cc'],
             ['exclude', '^browser/chromeos/notifications/'],
-            ['exclude', '^browser/chromeos/xinput_hierarchy_changed_event_listener.cc'],
             ['include', '^browser/ui/views/handle_web_keyboard_event_aura.cc'],
             ['include', '^browser/ui/views/handle_web_keyboard_event.h'],
           ],
         }],
         [ 'use_openssl==1', {
           'sources!': [
             'browser/importer/nss_decryptor.cc',
             'browser/importer/nss_decryptor_system_nss.cc',
             'browser/importer/nss_decryptor_system_nss.h',
             'browser/ui/crypto_module_password_dialog_nss.cc',
@@ skipping 86 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/history/in_memory_url_index_cache.proto' ],
       'variables': {
         'proto_in_dir': 'browser/history',
         'proto_out_dir': 'chrome/browser/history',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }