mash: Move SystemTrayDelegate and dependencies to //ash/common

chrome/browser/ui/ash/system_tray_delegate_chromeos.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/ui/ash/system_tray_delegate_chromeos.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/session/session_state_observer.h"
 #include "ash/common/shell_window_ids.h"
+#include "ash/common/system/tray/system_tray_delegate.h"
+#include "ash/common/system/update/update_observer.h"
+#include "ash/common/system/volume_control_delegate.h"
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/system/chromeos/bluetooth/bluetooth_observer.h"
 #include "ash/system/chromeos/power/power_status.h"
 #include "ash/system/chromeos/session/logout_button_observer.h"
 #include "ash/system/chromeos/shutdown_policy_observer.h"
 #include "ash/system/date/clock_observer.h"
 #include "ash/system/ime/ime_observer.h"
 #include "ash/system/tray/system_tray.h"
-#include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/system/tray_accessibility.h"
 #include "ash/system/user/login_status.h"
-#include "ash/system/user/update_observer.h"
 #include "ash/system/user/user_observer.h"
-#include "ash/volume_control_delegate.h"
 #include "ash/wm/lock_state_controller.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/sys_info.h"
 #include "base/time/time.h"
@@ skipping 1282 matching lines @@
   LOG(WARNING) << "SystemTrayDelegateChromeOS::GetChildUserMessage call while "
                << "ENABLE_SUPERVISED_USERS undefined.";
   return base::string16();
 }
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate() {
   return new SystemTrayDelegateChromeOS();
 }
 
 }  // namespace chromeos