NetworkPortalDetectorInterface class.

chrome/browser/chromeos/login/enrollment/auto_enrollment_check_screen.cc

 // 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 "chrome/browser/chromeos/login/enrollment/auto_enrollment_check_screen.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 80 matching lines @@
   // top.
   actor_->Show();
   histogram_helper_->OnScreenShow();
 
   // Set up state change observers.
   auto_enrollment_progress_subscription_ =
       auto_enrollment_controller_->RegisterProgressCallback(
           base::Bind(
               &AutoEnrollmentCheckScreen::OnAutoEnrollmentCheckProgressed,
               base::Unretained(this)));
-  NetworkPortalDetector* portal_detector = NetworkPortalDetector::Get();
-  portal_detector->AddObserver(this);
+  NetworkPortalDetector::Get()->AddObserver(this);
 
   // Perform an initial UI update.
   NetworkPortalDetector::CaptivePortalStatus new_captive_portal_status =
       GetCaptivePortalStatus();
   policy::AutoEnrollmentState new_auto_enrollment_state =
       auto_enrollment_controller_->state();
 
   if (!UpdateCaptivePortalStatus(new_captive_portal_status))
     UpdateAutoEnrollmentState(new_auto_enrollment_state);
 
   captive_portal_status_ = new_captive_portal_status;
   auto_enrollment_state_ = new_auto_enrollment_state;
 
   // Make sure gears are in motion in the background.
   auto_enrollment_controller_->Start();
-  portal_detector->StartDetectionIfIdle();
+  NetworkPortalDetector::Get()->StartDetectionIfIdle();
 }
 
 void AutoEnrollmentCheckScreen::Hide() {
 }
 
 std::string AutoEnrollmentCheckScreen::GetName() const {
   return WizardController::kAutoEnrollmentCheckScreenName;
 }
 
 void AutoEnrollmentCheckScreen::OnActorDestroyed(
@@ skipping 143 matching lines @@
   }
   NOTREACHED();
   return false;
 }
 
 void AutoEnrollmentCheckScreen::OnConnectRequested() {
   auto_enrollment_controller_->Retry();
 }
 
 }  // namespace chromeos