Disambiguate LifecycleObserver::contextDestroyed

third_party/WebKit/Source/modules/eventsource/EventSource.cpp

 /*
  * Copyright (C) 2009, 2012 Ericsson AB. All rights reserved.
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011, Code Aurora Forum. 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
@@ skipping 350 matching lines @@
 void EventSource::abortConnectionAttempt() {
   DCHECK_EQ(kConnecting, m_state);
 
   m_loader = nullptr;
   m_state = kClosed;
   networkRequestEnded();
 
   dispatchEvent(Event::create(EventTypeNames::error));
 }
 
-void EventSource::contextDestroyed() {
+void EventSource::contextDestroyed(ExecutionContext*) {
   close();
 }
 
 bool EventSource::hasPendingActivity() const {
   return m_state != kClosed;
 }
 
 DEFINE_TRACE(EventSource) {
   visitor->trace(m_parser);
   visitor->trace(m_loader);
   EventTargetWithInlineData::trace(visitor);
   ContextLifecycleObserver::trace(visitor);
   EventSourceParser::Client::trace(visitor);
 }
 
 }  // namespace blink