Show overlay displaying the state of all sticky keys when it is enabled.

ash/ash.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
   },
   'includes': [
@@ skipping 232 matching lines @@
         'shelf/shelf_widget.h',
         'shelf/shelf_window_watcher.cc',
         'shelf/shelf_window_watcher.h',
         'shelf/shelf_window_watcher_item_delegate.cc',
         'shelf/shelf_window_watcher_item_delegate.h',
         'shell.cc',
         'shell.h',
         'shell_delegate.h',
         'shell_factory.h',
         'shell_window_ids.h',
+        'sticky_keys/sticky_keys_constants.h',
         'sticky_keys/sticky_keys_controller.cc',
         'sticky_keys/sticky_keys_controller.h',
+        'sticky_keys/sticky_keys_overlay.cc',
+        'sticky_keys/sticky_keys_overlay.h',
         'system/bluetooth/bluetooth_observer.h',
         'system/bluetooth/tray_bluetooth.cc',
         'system/bluetooth/tray_bluetooth.h',
         'system/brightness_control_delegate.h',
         'system/chromeos/audio/tray_audio.cc',
         'system/chromeos/audio/tray_audio.h',
         'system/chromeos/enterprise/enterprise_domain_observer.h',
         'system/chromeos/brightness/brightness_controller_chromeos.cc',
         'system/chromeos/brightness/brightness_controller_chromeos.h',
         'system/chromeos/brightness/tray_brightness.cc',
@@ skipping 598 matching lines @@
         'shell/shell_delegate_impl.h',
         'shell/widgets.cc',
         'shell/window_type_launcher.cc',
         'shell/window_type_launcher.h',
         'shell/window_watcher.cc',
         'shell/window_watcher.h',
         'shell/window_watcher_shelf_item_delegate.cc',
         'shell/window_watcher_shelf_item_delegate.h',
         'shell/window_watcher_unittest.cc',
         'shell_unittest.cc',
+        'sticky_keys/sticky_keys_overlay_unittest.cc',
         'sticky_keys/sticky_keys_unittest.cc',
         'system/chromeos/managed/tray_locally_managed_user_unittest.cc',
         'system/chromeos/network/network_state_notifier_unittest.cc',
         'system/chromeos/power/power_event_observer_unittest.cc',
         'system/chromeos/power/power_status_unittest.cc',
         'system/chromeos/power/tray_power_unittest.cc',
         'system/chromeos/screen_security/screen_tray_item_unittest.cc',
         'system/chromeos/tray_display_unittest.cc',
         'system/date/date_view_unittest.cc',
         'system/logout_button/logout_button_tray_unittest.cc',
@@ skipping 56 matching lines @@
           'sources/': [
             # TODO(zork): fix this test to build on Windows. See: crosbug.com/26906
             ['exclude', 'focus_cycler_unittest.cc'],
             # All tests for multiple displays: not supported on Windows Ash.
             ['exclude', 'accelerators/nested_dispatcher_controller_unittest.cc'],
             ['exclude', 'wm/drag_window_resizer_unittest.cc'],
             # Can't resize on Windows Ash. http://crbug.com/165962
             ['exclude', 'ash_root_window_transformer_unittest.cc'],
             ['exclude', 'magnifier/magnification_controller_unittest.cc'],
             ['exclude', 'wm/workspace/workspace_window_resizer_unittest.cc'],
+            ['exclude', 'sticky_keys/sticky_keys_overlay_unittest.cc'],
             ['exclude', 'sticky_keys/sticky_keys_unittest.cc'],
             ['exclude', 'autoclick/autoclick_unittest.cc'],
           ],
           'sources': [
             '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/ui_unscaled_resources.rc',
           ],
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [ 4267, ],
         }],
         ['OS=="win" and win_use_allocator_shim==1', {
@@ skipping 102 matching lines @@
             },
           },
           'dependencies': [
             '../sandbox/sandbox.gyp:sandbox',
           ],
         }],
       ],
     },
   ],
 }