Change userid from a uint32_t to a string guid

components/mus/ws/test_utils.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_TEST_UTILS_H_
 #define COMPONENTS_MUS_WS_TEST_UTILS_H_
 
 #include <stdint.h>
 
 #include "components/mus/public/interfaces/window_tree.mojom.h"
@@ skipping 10 matching lines @@
 namespace ws {
 namespace test {
 
 // Collection of utilities useful in creating mus tests.
 
 class WindowManagerFactoryRegistryTestApi {
  public:
   WindowManagerFactoryRegistryTestApi(WindowManagerFactoryRegistry* registry);
   ~WindowManagerFactoryRegistryTestApi();
 
-  void AddService(UserId user_id, mojom::WindowManagerFactory* factory);
+  void AddService(const UserId& user_id, mojom::WindowManagerFactory* factory);
 
  private:
   WindowManagerFactoryRegistry* registry_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerFactoryRegistryTestApi);
 };
 
 // -----------------------------------------------------------------------------
 
 class WindowTreeTestApi {
@@ skipping 192 matching lines @@
   bool got_on_no_more_connections_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(TestConnectionManagerDelegate);
 };
 
 }  // namespace test
 }  // namespace ws
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_WS_TEST_UTILS_H_