Change userid from a uint32_t to a string guid

components/mus/ws/window_manager_factory_registry.cc

 // 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.
 
 #include "components/mus/ws/window_manager_factory_registry.h"
 
 #include "components/mus/ws/connection_manager.h"
 #include "components/mus/ws/user_id_tracker_observer.h"
 #include "components/mus/ws/window_manager_factory_registry_observer.h"
 #include "components/mus/ws/window_manager_factory_service.h"
 
 namespace mus {
 namespace ws {
 
 WindowManagerFactoryRegistry::WindowManagerFactoryRegistry(
     ConnectionManager* connection_manager,
     UserIdTracker* id_tracker)
     : id_tracker_(id_tracker), connection_manager_(connection_manager) {
   id_tracker_->AddObserver(this);
 }
 
 WindowManagerFactoryRegistry::~WindowManagerFactoryRegistry() {
   id_tracker_->RemoveObserver(this);
 }
 
 void WindowManagerFactoryRegistry::Register(
-    UserId user_id,
+    const UserId& user_id,
     mojo::InterfaceRequest<mojom::WindowManagerFactoryService> request) {
   if (ContainsServiceForUser(user_id))
     return;
 
   scoped_ptr<WindowManagerFactoryService> service(
       new WindowManagerFactoryService(this, user_id, std::move(request)));
   AddServiceImpl(std::move(service));
 }
 
 std::vector<WindowManagerFactoryService*>
@@ skipping 13 matching lines @@
     WindowManagerFactoryRegistryObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void WindowManagerFactoryRegistry::AddServiceImpl(
     scoped_ptr<WindowManagerFactoryService> service) {
   services_.push_back(std::move(service));
 }
 
 bool WindowManagerFactoryRegistry::ContainsServiceForUser(
-    UserId user_id) const {
+    const UserId& user_id) const {
   for (auto& service_ptr : services_) {
     if (service_ptr->user_id() == user_id) {
       LOG(ERROR) << "WindowManagerFactoryService already registered for "
                  << user_id;
       return true;
     }
   }
   return false;
 }
 
@@ skipping 14 matching lines @@
   got_valid_factory_ = true;
   FOR_EACH_OBSERVER(WindowManagerFactoryRegistryObserver, observers_,
                     OnWindowManagerFactorySet(service));
 
   // Notify after other observers as ConnectionManager triggers other
   // observers being added, which will have already processed the add.
   if (is_first_valid_factory)
     connection_manager_->OnFirstWindowManagerFactorySet();
 }
 
-void WindowManagerFactoryRegistry::OnActiveUserIdChanged(UserId id) {}
+void WindowManagerFactoryRegistry::OnActiveUserIdChanged(const UserId& id) {}
 
-void WindowManagerFactoryRegistry::OnUserIdAdded(UserId id) {}
+void WindowManagerFactoryRegistry::OnUserIdAdded(const UserId& id) {}
 
-void WindowManagerFactoryRegistry::OnUserIdRemoved(UserId id) {
+void WindowManagerFactoryRegistry::OnUserIdRemoved(const UserId& id) {
   for (auto iter = services_.begin(); iter != services_.end(); ++iter) {
     if ((*iter)->user_id() == id) {
       services_.erase(iter);
       return;
     }
   }
 }
 
 }  // namespace ws
 }  // namespace mus