Remove usage of FOR_EACH_OBSERVER macro in remoting

remoting/signaling/delegating_signal_strategy.cc

 // Copyright 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 "remoting/signaling/delegating_signal_strategy.h"
 
 #include "base/bind.h"
 #include "base/rand_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "third_party/webrtc/libjingle/xmllite/xmlelement.h"
@@ skipping 28 matching lines @@
   }
 
   for (auto& listener : listeners_) {
     if (listener.OnSignalStrategyIncomingStanza(stanza.get()))
       break;
   }
 }
 
 void DelegatingSignalStrategy::Connect() {
   DCHECK(client_task_runner_->BelongsToCurrentThread());
-  FOR_EACH_OBSERVER(Listener, listeners_,
-                    OnSignalStrategyStateChange(CONNECTED));
+  for (auto& observer : listeners_)
+    observer.OnSignalStrategyStateChange(CONNECTED);
 }
 
 void DelegatingSignalStrategy::Disconnect() {
   DCHECK(client_task_runner_->BelongsToCurrentThread());
 }
 
 SignalStrategy::State DelegatingSignalStrategy::GetState() const {
   DCHECK(client_task_runner_->BelongsToCurrentThread());
   return CONNECTED;
 }
@@ skipping 25 matching lines @@
   delegate_task_runner_->PostTask(FROM_HERE,
                                   base::Bind(send_iq_callback_, stanza->Str()));
   return true;
 }
 
 std::string DelegatingSignalStrategy::GetNextId() {
   return base::Uint64ToString(base::RandUint64());
 }
 
 }  // namespace remoting