Disambiguate LifecycleObserver::contextDestroyed

third_party/WebKit/Source/modules/peerconnection/RTCVoidRequestImpl.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 64 matching lines @@
       m_requester && m_requester->shouldFireDefaultCallbacks();
   if (shouldFireCallback && m_errorCallback.get()) {
     // TODO(guidou): The error code should come from the content layer. See
     // crbug.com/589455
     m_errorCallback->handleEvent(DOMException::create(OperationError, error));
   }
 
   clear();
 }
 
-void RTCVoidRequestImpl::contextDestroyed() {
+void RTCVoidRequestImpl::contextDestroyed(ExecutionContext*) {
   clear();
 }
 
 void RTCVoidRequestImpl::clear() {
   m_successCallback.clear();
   m_errorCallback.clear();
   m_requester.clear();
 }
 
 DEFINE_TRACE(RTCVoidRequestImpl) {
   visitor->trace(m_successCallback);
   visitor->trace(m_errorCallback);
   visitor->trace(m_requester);
   RTCVoidRequest::trace(visitor);
   ContextLifecycleObserver::trace(visitor);
 }
 
 }  // namespace blink