Use __func__ instead of __FUNCTION__.

chrome/browser/media/router/presentation_session_messages_observer.cc

 // Copyright 2015 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/media/router/presentation_session_messages_observer.h"
 
 #include "chrome/browser/media/router/media_router.h"
 
 namespace media_router {
 
 PresentationSessionMessagesObserver::PresentationSessionMessagesObserver(
     const content::PresentationSessionMessageCallback& message_cb,
     const MediaRoute::Id& route_id,
     MediaRouter* router)
     : message_cb_(message_cb), route_id_(route_id), router_(router) {
   DCHECK(!message_cb_.is_null());
   DCHECK(!route_id_.empty());
   DCHECK(router_);
   router_->RegisterPresentationSessionMessagesObserver(this);
 }
 
 PresentationSessionMessagesObserver::~PresentationSessionMessagesObserver() {
   router_->UnregisterPresentationSessionMessagesObserver(this);
 }
 
 void PresentationSessionMessagesObserver::OnMessagesReceived(
     const ScopedVector<content::PresentationSessionMessage>& messages,
     bool pass_ownership) {
-  DVLOG(2) << __FUNCTION__ << ", number of messages : " << messages.size()
+  DVLOG(2) << __func__ << ", number of messages : " << messages.size()
            << " (pass_ownership = " << pass_ownership << ")";
   DCHECK(!messages.empty());
   message_cb_.Run(messages, pass_ownership);
 }
 
 }  // namespace media_router