Add profile selector menu to app list.

ui/app_list/app_list_model.cc

 // Copyright (c) 2012 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 "ui/app_list/app_list_model.h"
 
 #include "ui/app_list/app_list_item_model.h"
 #include "ui/app_list/app_list_model_observer.h"
 #include "ui/app_list/search_box_model.h"
 #include "ui/app_list/search_result.h"
 
 namespace app_list {
 
+AppListModel::User::User() : active(false) {}
+
+AppListModel::User::~User() {}
+
 AppListModel::AppListModel()
     : apps_(new Apps),
       search_box_(new SearchBoxModel),
       results_(new SearchResults),
       signed_in_(false),
       status_(STATUS_NORMAL) {
 }
 
 AppListModel::~AppListModel() {
 }
 
 void AppListModel::AddObserver(AppListModelObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void AppListModel::RemoveObserver(AppListModelObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void AppListModel::SetStatus(Status status) {
   if (status_ == status)
     return;
 
   status_ = status;
   FOR_EACH_OBSERVER(AppListModelObserver,
                     observers_,
                     OnAppListModelStatusChanged());
 }
 
-void AppListModel::SetCurrentUser(const base::string16& current_user_name,
-                                  const base::string16& current_user_email) {
-  if (current_user_name_ == current_user_name &&
-      current_user_email_ == current_user_email) {
-    return;
-  }
-  current_user_name_ = current_user_name;
-  current_user_email_ = current_user_email;
+void AppListModel::SetUsers(const Users& users) {
+  users_ = users;
   FOR_EACH_OBSERVER(AppListModelObserver,
                     observers_,
-                    OnAppListModelCurrentUserChanged());
+                    OnAppListModelUsersChanged());
 }
 
 void AppListModel::SetSignedIn(bool signed_in) {
   if (signed_in_ == signed_in)
     return;
 
   signed_in_ = signed_in;
   FOR_EACH_OBSERVER(AppListModelObserver,
                     observers_,
                     OnAppListModelSigninStatusChanged());
 }
 
 }  // namespace app_list