Remove unused LoginPerformer::Delegate setter and member.

chrome/browser/chromeos/login/existing_user_controller.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/existing_user_controller.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 429 matching lines @@
       set_host(host_);
 
   BootTimesLoader::Get()->RecordLoginAttempted();
 
   // Disable UI while loading user profile.
   login_display_->SetUIEnabled(false);
 
   // Use the same LoginPerformer for subsequent login as it has state
   // such as Authenticator instance.
   if (!login_performer_.get() || num_login_attempts_ <= 1) {
-    LoginPerformer::Delegate* delegate = this;
-    if (login_performer_delegate_.get())
-      delegate = login_performer_delegate_.get();
     // Only one instance of LoginPerformer should exist at a time.
     login_performer_.reset(NULL);
-    login_performer_.reset(new LoginPerformer(delegate));
+    login_performer_.reset(new LoginPerformer(this));
   }
 
   is_login_in_progress_ = true;
   if (gaia::ExtractDomainName(user_context.GetUserID()) ==
       chromeos::login::kSupervisedUserDomain) {
     login_performer_->LoginAsSupervisedUser(user_context);
   } else {
     login_performer_->PerformLogin(user_context, auth_mode);
   }
   SendAccessibilityAlert(
@@ skipping 692 matching lines @@
 }
 
 void ExistingUserController::SendAccessibilityAlert(
     const std::string& alert_text) {
   AccessibilityAlertInfo event(ProfileHelper::GetSigninProfile(), alert_text);
   SendControlAccessibilityNotification(
       ui::AX_EVENT_VALUE_CHANGED, &event);
 }
 
 }  // namespace chromeos