Crash fix for calling LoginUtilsImpl::RestoreAuthSession() during the main loop shutdown.

chrome/browser/chromeos/login/login_utils.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/chromeos/login/login_utils.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/ash_switches.h"
@@ skipping 526 matching lines @@
   FinalizePrepareProfile(ProfileManager::GetDefaultProfile());
 }
 
 void LoginUtilsImpl::CompleteProfileCreate(Profile* user_profile) {
   RestoreAuthSession(user_profile, has_web_auth_cookies_);
   FinalizePrepareProfile(user_profile);
 }
 
 void LoginUtilsImpl::RestoreAuthSession(Profile* user_profile,
                                         bool restore_from_auth_cookies) {
-  DCHECK(authenticator_ || !restore_from_auth_cookies);
+  CHECK((authenticator_ && authenticator_->authentication_profile()) ||
+        !restore_from_auth_cookies);
+  if (!login_manager_.get())
+    return;
+
   // Remove legacy OAuth1 token if we have one. If it's valid, we should already
   // have OAuth2 refresh token in TokenService that could be used to retrieve
   // all other tokens and credentials.
   login_manager_->RestoreSession(
       user_profile,
-      authenticator_ ?
+      authenticator_ && authenticator_->authentication_profile() ?
           authenticator_->authentication_profile()->GetRequestContext() :
           NULL,
       restore_from_auth_cookies);
 }
 
 void LoginUtilsImpl::FinalizePrepareProfile(Profile* user_profile) {
   BootTimesLoader* btl = BootTimesLoader::Get();
   // Own TPM device if, for any reason, it has not been done in EULA
   // wizard screen.
   CryptohomeLibrary* cryptohome = CrosLibrary::Get()->GetCryptohomeLibrary();
@@ skipping 475 matching lines @@
 bool LoginUtils::IsWhitelisted(const std::string& username) {
   CrosSettings* cros_settings = CrosSettings::Get();
   bool allow_new_user = false;
   cros_settings->GetBoolean(kAccountsPrefAllowNewUser, &allow_new_user);
   if (allow_new_user)
     return true;
   return cros_settings->FindEmailInList(kAccountsPrefUsers, username);
 }
 
 }  // namespace chromeos