Reduce usage of FOR_EACH_OBSERVER macro in components/invalidation

components/invalidation/impl/sync_system_resources.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 "components/invalidation/impl/sync_system_resources.h"
 
 #include <cstdlib>
 #include <cstring>
 #include <string>
 #include <utility>
@@ skipping 175 matching lines @@
   // Notify NetworkStatusReceivers in cacheinvalidation.
   for (NetworkStatusReceiverList::const_iterator it =
            network_status_receivers_.begin();
        it != network_status_receivers_.end(); ++it) {
     (*it)->Run(online);
   }
 }
 
 void SyncNetworkChannel::NotifyChannelStateChange(
     InvalidatorState invalidator_state) {
-  FOR_EACH_OBSERVER(Observer, observers_,
-                    OnNetworkChannelStateChanged(invalidator_state));
+  for (auto& observer : observers_)
+    observer.OnNetworkChannelStateChanged(invalidator_state);
 }
 
 bool SyncNetworkChannel::DeliverIncomingMessage(const std::string& message) {
   if (!incoming_receiver_) {
     DLOG(ERROR) << "No receiver for incoming notification";
     return false;
   }
   received_messages_count_++;
   incoming_receiver_->Run(message);
   return true;
@@ skipping 121 matching lines @@
 
 SyncInvalidationScheduler* SyncSystemResources::internal_scheduler() {
   return internal_scheduler_.get();
 }
 
 SyncInvalidationScheduler* SyncSystemResources::listener_scheduler() {
   return listener_scheduler_.get();
 }
 
 }  // namespace syncer