Add username of account that has an auth error.

components/signin/ios/browser/profile_oauth2_token_service_ios.h

 // 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.
 
 #ifndef COMPONENTS_SIGNIN_IOS_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_H_
 #define COMPONENTS_SIGNIN_IOS_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_H_
 
 #include <string>
 
 #include "base/threading/thread_checker.h"
@@ skipping 96 matching lines @@
   class AccountInfo : public SigninErrorController::AuthStatusProvider {
    public:
     AccountInfo(ProfileOAuth2TokenService* token_service,
                 const std::string& account_id);
     virtual ~AccountInfo();
 
     void SetLastAuthError(const GoogleServiceAuthError& error);
 
     // SigninErrorController::AuthStatusProvider implementation.
     virtual std::string GetAccountId() const OVERRIDE;
+    virtual std::string GetUsername() const OVERRIDE;
     virtual GoogleServiceAuthError GetAuthStatus() const OVERRIDE;
 
    private:
     ProfileOAuth2TokenService* token_service_;
     std::string account_id_;
     GoogleServiceAuthError last_auth_error_;
 
     DISALLOW_COPY_AND_ASSIGN(AccountInfo);
   };
 
@@ skipping 26 matching lines @@
   //
   // If |use_legacy_token_service_| is true, then this
   // |ProfileOAuth2TokenServiceIOS| delegates all calls to the parent
   // |MutableProfileOAuth2TokenService|.
   bool use_legacy_token_service_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileOAuth2TokenServiceIOS);
 };
 
 #endif  // COMPONENTS_SIGNIN_IOS_BROWSER_PROFILE_OAUTH2_TOKEN_SERVICE_IOS_H_