Add username of account that has an auth error.

components/signin/ios/browser/profile_oauth2_token_service_ios.mm

 // Copyright 2014 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 "components/signin/ios/browser/profile_oauth2_token_service_ios.h"
 
 #include <Foundation/Foundation.h>
 
 #include <set>
 #include <string>
@@ skipping 190 matching lines @@
   if (error.state() != last_auth_error_.state()) {
     last_auth_error_ = error;
     token_service_->signin_error_controller()->AuthStatusChanged();
   }
 }
 
 std::string ProfileOAuth2TokenServiceIOS::AccountInfo::GetAccountId() const {
   return account_id_;
 }
 
+std::string ProfileOAuth2TokenServiceIOS::AccountInfo::GetUsername() const {
+  // TODO(rogerta): when |account_id| becomes the obfuscated gaia id, this
+  // will need to be changed.
+  return account_id_;
+}
+
 GoogleServiceAuthError
 ProfileOAuth2TokenServiceIOS::AccountInfo::GetAuthStatus() const {
   return last_auth_error_;
 }
 
 ProfileOAuth2TokenServiceIOS::ProfileOAuth2TokenServiceIOS()
     : MutableProfileOAuth2TokenService(),
       use_legacy_token_service_(false) {
   DCHECK(thread_checker_.CalledOnValidThread());
 }
@@ skipping 270 matching lines @@
   if (!use_legacy_token_service_)
     return;
   MutableProfileOAuth2TokenService::RevokeAllCredentials();
   use_legacy_token_service_ = false;
 }
 
 void ProfileOAuth2TokenServiceIOS::SetUseLegacyTokenServiceForTesting(
     bool use_legacy_token_service) {
   use_legacy_token_service_ = use_legacy_token_service;
 }