Add profile selector menu to app list.

ui/app_list/app_list_model.cc

Index: ui/app_list/app_list_model.cc
diff --git a/ui/app_list/app_list_model.cc b/ui/app_list/app_list_model.cc
index a932069d26cacb0dc6cc468edc9f8c25518ebfa5..d21a24c2ba6c0af2f3fb42217f80fba049a46678 100644
--- a/ui/app_list/app_list_model.cc
+++ b/ui/app_list/app_list_model.cc
@@ -20,6 +20,7 @@ AppListModel::AppListModel()
 }
 
 AppListModel::~AppListModel() {
+  STLDeleteElements(&users_);
 }
 
 void AppListModel::AddObserver(AppListModelObserver* observer) {
@@ -40,17 +41,12 @@ void AppListModel::SetStatus(Status status) {
                     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) {
+  STLDeleteElements(&users_);
+  users_ = users;
   FOR_EACH_OBSERVER(AppListModelObserver,
                     observers_,
-                    OnAppListModelCurrentUserChanged());
+                    OnAppListModelUsersChanged());
 }
 
 void AppListModel::SetSignedIn(bool signed_in) {