Replace FOR_EACH_OBSERVER in c/b/chromeos with range-based for

chrome/browser/chromeos/net/network_portal_detector_impl.cc

 // Copyright (c) 2013 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/net/network_portal_detector_impl.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 581 matching lines @@
     }
 
     portal_state_map_[network->guid()] = state;
   }
   NotifyDetectionCompleted(network, state);
 }
 
 void NetworkPortalDetectorImpl::NotifyDetectionCompleted(
     const NetworkState* network,
     const CaptivePortalState& state) {
-  FOR_EACH_OBSERVER(
-      Observer, observers_, OnPortalDetectionCompleted(network, state));
+  for (auto& observer : observers_)
+    observer.OnPortalDetectionCompleted(network, state);
 }
 
 bool NetworkPortalDetectorImpl::AttemptTimeoutIsCancelledForTesting() const {
   return attempt_timeout_.IsCancelled();
 }
 
 void NetworkPortalDetectorImpl::RecordDetectionStats(
     const NetworkState* network,
     CaptivePortalStatus status) {
   // Don't record stats for offline state.
@@ skipping 31 matching lines @@
 }
 
 void NetworkPortalDetectorImpl::ResetStrategyAndCounters() {
   last_detection_result_ = CAPTIVE_PORTAL_STATUS_UNKNOWN;
   same_detection_result_count_ = 0;
   no_response_result_count_ = 0;
   strategy_->Reset();
 }
 
 }  // namespace chromeos