Use OffTheRecord profile in case of GuestLogin for AppList.

chrome/browser/ui/views/ash/launcher/chrome_launcher_delegate.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 "chrome/browser/ui/views/ash/launcher/chrome_launcher_delegate.h"
 
 #include "ash/launcher/launcher_model.h"
 #include "ash/launcher/launcher_types.h"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
@@ skipping 500 matching lines @@
     if (current->second.app_id == app_id && current->second.pinned)
       Unpin(current->first);
   }
 }
 
 void ChromeLauncherDelegate::SetAppIconLoaderForTest(AppIconLoader* loader) {
   app_icon_loader_.reset(loader);
 }
 
 Profile* ChromeLauncherDelegate::GetProfileForNewWindows() {
-  Profile* profile = ProfileManager::GetDefaultProfile();
-  if (browser_defaults::kAlwaysOpenIncognitoWindow &&
-      IncognitoModePrefs::ShouldLaunchIncognito(
-          *CommandLine::ForCurrentProcess(),
-          profile->GetPrefs())) {
-    profile = profile->GetOffTheRecordProfile();
-  }
-  return profile;
+  return ProfileManager::GetDefaultProfileOrOffTheRecord();
 }