Loading the Launcher with a Locked Profile launched UserManager.

chrome/browser/ui/app_list/app_list_service_disabled.cc

 // Copyright 2013 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 "base/files/file_path.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 
 namespace {
 
@@ skipping 44 matching lines @@
 };
 
 }  // namespace
 
 // static
 AppListService* AppListService::Get(chrome::HostDesktopType desktop_type) {
   return AppListServiceDisabled::GetInstance();
 }
 
 // static
-void AppListService::InitAll(Profile* initial_profile) {}
+void AppListService::InitAll(Profile* initial_profile,
+                             const base::FilePath& profile_path) {}
 
 // static
 void AppListService::RegisterPrefs(PrefRegistrySimple* registry) {}
 
 // static
 bool AppListService::HandleLaunchCommandLine(
     const base::CommandLine& command_line,
     Profile* launch_profile) {
   return false;
 }