[Chrome OS] Plumb new error codes from SignedSettings to consumers of the API

chrome/browser/chromeos/login/login_performer.cc

 // Copyright (c) 2010 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_performer.h"
 
 #include <string>
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
@@ skipping 138 matching lines @@
             GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS));
     password_changed_ = true;
     DVLOG(1) << "Password change detected - locking screen.";
     RequestScreenLock();
   }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // LoginPerformer, SignedSettingsHelper::Callback implementation:
 
-void LoginPerformer::OnCheckWhiteListCompleted(bool success,
+void LoginPerformer::OnCheckWhitelistCompleted(SignedSettings::ReturnCode code,
                                                const std::string& email) {
-  if (success) {
+  if (code == SignedSettings::SUCCESS) {
     // Whitelist check passed, continue with authentication.
     StartAuthentication();
   } else {
     if (delegate_)
       delegate_->WhiteListCheckFailed(email);
     else
       NOTREACHED();
   }
 }
 
@@ skipping 256 matching lines @@
                           profile,
                           username_,
                           password_,
                           captcha_token_,
                           captcha_));
   }
   password_.clear();
 }
 
 }  // namespace chromeos