Disambiguate LifecycleObserver::contextDestroyed

third_party/WebKit/Source/modules/peerconnection/RTCDataChannel.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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 289 matching lines @@
 // SuspendableObject
 void RTCDataChannel::suspend() {
   m_scheduledEventTimer.stop();
 }
 
 void RTCDataChannel::resume() {
   if (!m_scheduledEvents.isEmpty() && !m_scheduledEventTimer.isActive())
     m_scheduledEventTimer.startOneShot(0, BLINK_FROM_HERE);
 }
 
-void RTCDataChannel::contextDestroyed() {
+void RTCDataChannel::contextDestroyed(ExecutionContext*) {
   if (m_stopped)
     return;
 
   m_stopped = true;
   m_handler->setClient(nullptr);
   m_handler.reset();
 }
 
 // ActiveScriptWrappable
 bool RTCDataChannel::hasPendingActivity() const {
@@ skipping 49 matching lines @@
   events.clear();
 }
 
 DEFINE_TRACE(RTCDataChannel) {
   visitor->trace(m_scheduledEvents);
   EventTargetWithInlineData::trace(visitor);
   SuspendableObject::trace(visitor);
 }
 
 }  // namespace blink