Move mus to //services/ui

services/ui/ws/user_id.h

 // Copyright 2016 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.
 
-#ifndef COMPONENTS_MUS_WS_USER_ID_H_
-#define COMPONENTS_MUS_WS_USER_ID_H_
+#ifndef SERVICES_UI_WS_USER_ID_H_
+#define SERVICES_UI_WS_USER_ID_H_
 
 #include <string>
 
 namespace mus {
 namespace ws {
 
 using UserId = std::string;
 
 inline UserId InvalidUserId() {
   return std::string();
 }
 
 }  // namespace ws
 }  // namespace mus
 
-#endif  // COMPONENTS_MUS_WS_USER_ID_H_
+#endif  // SERVICES_UI_WS_USER_ID_H_