Revert of Make Hands-Off Zero-Touch Enrollment compatibile with tests

chromeos/network/portal_detector/network_portal_detector.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 CHROMEOS_NETWORK_PORTAL_DETECTOR_NETWORK_PORTAL_DETECTOR_H_
 #define CHROMEOS_NETWORK_PORTAL_DETECTOR_NETWORK_PORTAL_DETECTOR_H_
 
 #include "base/macros.h"
 #include "chromeos/chromeos_export.h"
 #include "chromeos/network/portal_detector/network_portal_detector_strategy.h"
@@ skipping 120 matching lines @@
 CHROMEOS_EXPORT void Shutdown();
 
 CHROMEOS_EXPORT void SetNetworkPortalDetector(
     NetworkPortalDetector* network_portal_detector);
 
 // Initializes network portal detector for testing. The
 // |network_portal_detector| will be owned by the internal pointer
 // and deleted by Shutdown().
 CHROMEOS_EXPORT void InitializeForTesting(
     NetworkPortalDetector* network_portal_detector);
-
-// Returns true if the network portal detector has been set for testing.
 CHROMEOS_EXPORT bool SetForTesting();
 
 }  // namespace network_portal_detector
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_NETWORK_PORTAL_DETECTOR_NETWORK_PORTAL_DETECTOR_H_