Hook up system clock update dbus signal to chrome and ash tray ui.

chromeos/chromeos.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,
   },
   'includes': [
     'chromeos_tools.gypi'
@@ skipping 113 matching lines @@
         'dbus/power_manager_client.cc',
         'dbus/power_manager_client.h',
         'dbus/power_policy_controller.cc',
         'dbus/power_policy_controller.h',
         'dbus/power_supply_status.cc',
         'dbus/power_supply_status.h',
         'dbus/session_manager_client.cc',
         'dbus/session_manager_client.h',
         'dbus/sms_client.cc',
         'dbus/sms_client.h',
+        'dbus/system_clock_client.cc',
+        'dbus/system_clock_client.h',
         'dbus/update_engine_client.cc',
         'dbus/update_engine_client.h',
         'disks/disk_mount_manager.cc',
         'disks/disk_mount_manager.h',
         'display/output_configurator.cc',
         'display/output_configurator.h',
         'ime/ibus_bridge.cc',
         'ime/ibus_bridge.h',
         'ime/ibus_daemon_controller.cc',
         'ime/ibus_daemon_controller.h',
@@ skipping 306 matching lines @@
         '../third_party/cros_system_api/dbus/video_activity_update.proto',
       ],
       'variables': {
         'proto_in_dir': '../third_party/cros_system_api/dbus/',
         'proto_out_dir': 'chromeos/dbus',
       },
       'includes': ['../build/protoc.gypi'],
     },
   ],
 }