Don't create a new profile when cleaning up stale ephemeral profiles.

chrome/browser/ui/webui/signin/user_manager_screen_handler.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/webui/signin/user_manager_screen_handler.h"
 
 #include "base/bind.h"
 #include "base/prefs/pref_service.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 459 matching lines @@
     NOTREACHED();
     return;
   }
 
   if (!profiles::IsMultipleProfilesEnabled()) {
     NOTREACHED();
     return;
   }
 
   g_browser_process->profile_manager()->ScheduleProfileForDeletion(
-      profile_path,
+      profile_path, false /* suppress_profile_creation */,
       base::Bind(&OpenNewWindowForProfile, desktop_type_));
   ProfileMetrics::LogProfileDeleteUser(
       ProfileMetrics::DELETE_PROFILE_USER_MANAGER);
 }
 
 void UserManagerScreenHandler::HandleLaunchGuest(const base::ListValue* args) {
   if (IsGuestModeEnabled()) {
     profiles::SwitchToGuestProfile(
         desktop_type_,
         base::Bind(&UserManagerScreenHandler::OnSwitchToProfileComplete,
@@ skipping 373 matching lines @@
     Profile* profile, Profile::CreateStatus profile_create_status) {
   Browser* browser = chrome::FindAnyBrowser(profile, false, desktop_type_);
   if (browser && browser->window()) {
     OnBrowserWindowReady(browser);
   } else {
     registrar_.Add(this,
                    chrome::NOTIFICATION_BROWSER_WINDOW_READY,
                    content::NotificationService::AllSources());
   }
 }