Profile chooser on mac was passing wrong value to signin error controller.

components/signin/core/browser/signin_error_controller.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_CORE_BROWSER_SIGNIN_ERROR_CONTROLLER_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_ERROR_CONTROLLER_H_
 
 #include <set>
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/observer_list.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 
 // Keep track of auth errors and expose them to observers in the UI. Services
 // that wish to expose auth errors to the user should register an
 // AuthStatusProvider to report their current authentication state, and should
 // invoke AuthStatusChanged() when their authentication state may have changed.
 class SigninErrorController : public KeyedService {
  public:
   class AuthStatusProvider {
    public:
     AuthStatusProvider();
     virtual ~AuthStatusProvider();
 
     // Returns the account id with the status specified by GetAuthStatus().
     virtual std::string GetAccountId() const = 0;
 
-    // Returns the username with the status specified by GetAuthStatus().
-    virtual std::string GetUsername() const = 0;
-
     // API invoked by SigninErrorController to get the current auth status of
     // the various signed in services.
     virtual GoogleServiceAuthError GetAuthStatus() const = 0;
   };
 
   // The observer class for SigninErrorController lets the controller notify
   // observers when an error arises or changes.
   class Observer {
    public:
     virtual ~Observer() {}
@@ skipping 14 matching lines @@
   // Invoked when the auth status of an AuthStatusProvider has changed.
   void AuthStatusChanged();
 
   // True if there exists an error worth elevating to the user.
   bool HasError() const;
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   const std::string& error_account_id() const { return error_account_id_; }
-  const std::string& error_username() const { return error_username_; }
   const GoogleServiceAuthError& auth_error() const { return auth_error_; }
 
  private:
   std::set<const AuthStatusProvider*> provider_set_;
 
   // The account that generated the last auth error.
   std::string error_account_id_;
-  std::string error_username_;
 
   // The auth error detected the last time AuthStatusChanged() was invoked (or
   // NONE if AuthStatusChanged() has never been invoked).
   GoogleServiceAuthError auth_error_;
 
   ObserverList<Observer, false> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninErrorController);
 };
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_ERROR_CONTROLLER_H_