Attempting to reland the Overview Button Change.

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 351 matching lines @@
         'system/date/tray_date.h',
         'system/drive/drive_observer.h',
         'system/drive/tray_drive.cc',
         'system/drive/tray_drive.h',
         'system/ime/ime_observer.h',
         'system/ime/tray_ime.cc',
         'system/ime/tray_ime.h',
         'system/keyboard_brightness/keyboard_brightness_control_delegate.h',
         'system/locale/locale_notification_controller.cc',
         'system/locale/locale_notification_controller.h',
+        'system/overview/overview_button_tray.h',
+        'system/overview/overview_button_tray.cc',
         'system/session/logout_button_observer.h',
         'system/session/logout_button_tray.cc',
         'system/session/logout_button_tray.h',
         'system/session/logout_confirmation_controller.cc',
         'system/session/logout_confirmation_controller.h',
         'system/session/logout_confirmation_dialog.cc',
         'system/session/logout_confirmation_dialog.h',
         'system/session/session_length_limit_observer.h',
         'system/session/tray_session_length_limit.cc',
         'system/session/tray_session_length_limit.h',
@@ skipping 536 matching lines @@
         '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/power_status_view_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/session/logout_confirmation_controller_unittest.cc',
+        'system/overview/overview_button_tray_unittest.cc',
         'system/session/tray_session_length_limit_unittest.cc',
         'system/tray/system_tray_unittest.cc',
         'system/tray/tray_details_view_unittest.cc',
         'system/user/tray_user_unittest.cc',
         'system/web_notification/web_notification_tray_unittest.cc',
         'test/ash_test_helper_unittest.cc',
         'test/ash_unittests.cc',
         'tooltips/tooltip_controller_unittest.cc',
         'touch/touch_observer_hud_unittest.cc',
         'wm/app_list_controller_unittest.cc',
@@ skipping 184 matching lines @@
         }],
         ['chromeos==1', {
           'dependencies': [
             '../device/bluetooth/bluetooth.gyp:device_bluetooth',
           ],
         }],
       ],
     },
   ],
 }