Loading the Launcher with a Locked Profile launched UserManager.

chrome/browser/ui/app_list/app_list_service.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 "chrome/browser/ui/app_list/app_list_service.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/process/process_info.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 
 namespace {
 
 enum StartupType {
   COLD_START,
   WARM_START,
   WARM_START_FAST,
 };
@@ skipping 130 matching lines @@
   // Identifies whether we should show the app launcher promo or not.
   // Note that a field trial also controls the showing, so the promo won't show
   // unless the pref is set AND the field trial is set to a proper group.
   registry->RegisterBooleanPref(prefs::kShowAppLauncherPromo, true);
 }
 
 // static
 bool AppListService::HandleLaunchCommandLine(
     const base::CommandLine& command_line,
     Profile* launch_profile) {
-  InitAll(launch_profile);
+  InitAll(launch_profile, launch_profile->GetPath());
   if (!command_line.HasSwitch(switches::kShowAppList))
     return false;
 
   // The --show-app-list switch is used for shortcuts on the native desktop.
   AppListService* service = Get(chrome::HOST_DESKTOP_TYPE_NATIVE);
   DCHECK(service);
   RecordStartupInfo(service, command_line, launch_profile);
   service->ShowForProfile(launch_profile);
   return true;
 }