Disambiguate LifecycleObserver::contextDestroyed

third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1021 matching lines @@
 void SourceBuffer::suspend() {
   m_appendBufferAsyncPartRunner->suspend();
   m_removeAsyncPartRunner->suspend();
 }
 
 void SourceBuffer::resume() {
   m_appendBufferAsyncPartRunner->resume();
   m_removeAsyncPartRunner->resume();
 }
 
-void SourceBuffer::contextDestroyed() {
+void SourceBuffer::contextDestroyed(ExecutionContext*) {
   m_appendBufferAsyncPartRunner->stop();
   m_removeAsyncPartRunner->stop();
 }
 
 ExecutionContext* SourceBuffer::getExecutionContext() const {
   return SuspendableObject::getExecutionContext();
 }
 
 const AtomicString& SourceBuffer::interfaceName() const {
   return EventTargetNames::SourceBuffer;
@@ skipping 246 matching lines @@
   visitor->trace(m_asyncEventQueue);
   visitor->trace(m_appendBufferAsyncPartRunner);
   visitor->trace(m_removeAsyncPartRunner);
   visitor->trace(m_audioTracks);
   visitor->trace(m_videoTracks);
   EventTargetWithInlineData::trace(visitor);
   SuspendableObject::trace(visitor);
 }
 
 }  // namespace blink