mash: Move tray settings and deps to common.

ash/common/system/system_notifier.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 "ash/system/system_notifier.h"
+#include "ash/common/system/system_notifier.h"
 
 #include "base/logging.h"
 
 #if defined(OS_CHROMEOS)
 #include "ui/chromeos/network/network_state_notifier.h"
 #endif
 
 namespace ash {
 namespace system_notifier {
 
@@ skipping 77 matching lines @@
   return MatchSystemNotifierId(notifier_id, kAlwaysShownSystemNotifierIds);
 }
 
 bool IsAshSystemNotifier(const message_center::NotifierId& notifier_id) {
   return ShouldAlwaysShowPopups(notifier_id) ||
          MatchSystemNotifierId(notifier_id, kAshSystemNotifiers);
 }
 
 }  // namespace system_notifier
 }  // namespace ash