Remove usage of FOR_EACH_OBSERVER macro in remoting

remoting/signaling/fake_signal_strategy.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 "remoting/signaling/fake_signal_strategy.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 47 matching lines @@
   }
 }
 
 void FakeSignalStrategy::SetLocalJid(const std::string& jid) {
   DCHECK(CalledOnValidThread());
   jid_ = jid;
 }
 
 void FakeSignalStrategy::Connect() {
   DCHECK(CalledOnValidThread());
-  FOR_EACH_OBSERVER(Listener, listeners_,
-                    OnSignalStrategyStateChange(CONNECTED));
+  for (auto& observer : listeners_)
+    observer.OnSignalStrategyStateChange(CONNECTED);
 }
 
 void FakeSignalStrategy::Disconnect() {
   DCHECK(CalledOnValidThread());
-  FOR_EACH_OBSERVER(Listener, listeners_,
-                    OnSignalStrategyStateChange(DISCONNECTED));
+  for (auto& observer : listeners_)
+    observer.OnSignalStrategyStateChange(DISCONNECTED);
 }
 
 SignalStrategy::State FakeSignalStrategy::GetState() const {
   return CONNECTED;
 }
 
 SignalStrategy::Error FakeSignalStrategy::GetError() const {
   return OK;
 }
 
@@ skipping 64 matching lines @@
     if (listener.OnSignalStrategyIncomingStanza(stanza_ptr))
       break;
   }
 }
 
 void FakeSignalStrategy::SetPeerCallback(const PeerCallback& peer_callback) {
   peer_callback_ = peer_callback;
 }
 
 }  // namespace remoting