Always load signin profile on Chrome OS startup.

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

 // Copyright (c) 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/chromeos/chrome_browser_main_chromeos.h"
 
 #include <string>
 #include <vector>
 
 #include "ash/ash_switches.h"
@@ skipping 591 matching lines @@
       new locale_util::SwitchLanguageCallback(base::Bind(
           &GuestLanguageSetCallbackData::Callback, base::Passed(data.Pass()))));
   User* const user = usermanager->GetUserByProfile(profile);
   usermanager->RespectLocalePreference(profile, user, callback.Pass());
 }
 
 void ChromeBrowserMainPartsChromeos::PostProfileInit() {
   // -- This used to be in ChromeBrowserMainParts::PreMainMessageLoopRun()
   // -- just after CreateProfile().
 
+  // Force loading of signin profile if it was not loaded before. It is possible
+  // when we are restoring session or skipping login screen for some other
+  // reason.
+  if (!chromeos::ProfileHelper::IsSigninProfile(profile()))
+    chromeos::ProfileHelper::GetSigninProfile();
+
   // Restarting Chrome inside existing user session. Possible cases:
   // 1. Chrome is restarted after crash.
   // 2. Chrome is started in browser_tests skipping the login flow
   // 3. Chrome is started on dev machine
   //    i.e. not on Chrome OS device w/o login flow.
   if (parsed_command_line().HasSwitch(switches::kLoginUser) &&
       !parsed_command_line().HasSwitch(switches::kLoginPassword)) {
     std::string login_user = parsed_command_line().GetSwitchValueASCII(
         chromeos::switches::kLoginUser);
     if (!base::SysInfo::IsRunningOnChromeOS() &&
@@ skipping 233 matching lines @@
   // Destroy DBus services immediately after threads are stopped.
   dbus_services_.reset();
 
   ChromeBrowserMainPartsLinux::PostDestroyThreads();
 
   // Destroy DeviceSettingsService after g_browser_process.
   DeviceSettingsService::Shutdown();
 }
 
 }  //  namespace chromeos