Disambiguate LifecycleObserver::contextDestroyed

third_party/WebKit/Source/modules/mediarecorder/MediaRecorder.cpp

 // 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 "modules/mediarecorder/MediaRecorder.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "core/events/Event.h"
 #include "core/fileapi/Blob.h"
 #include "core/inspector/ConsoleMessage.h"
@@ skipping 297 matching lines @@
 }
 
 void MediaRecorder::suspend() {
   m_dispatchScheduledEventRunner->suspend();
 }
 
 void MediaRecorder::resume() {
   m_dispatchScheduledEventRunner->resume();
 }
 
-void MediaRecorder::contextDestroyed() {
+void MediaRecorder::contextDestroyed(ExecutionContext*) {
   if (m_stopped)
     return;
 
   m_stopped = true;
   m_stream.clear();
   m_recorderHandler.reset();
 }
 
 void MediaRecorder::writeData(const char* data,
                               size_t length,
@@ skipping 66 matching lines @@
 
 DEFINE_TRACE(MediaRecorder) {
   visitor->trace(m_stream);
   visitor->trace(m_dispatchScheduledEventRunner);
   visitor->trace(m_scheduledEvents);
   EventTargetWithInlineData::trace(visitor);
   SuspendableObject::trace(visitor);
 }
 
 }  // namespace blink