Disambiguate LifecycleObserver::contextDestroyed

third_party/WebKit/Source/modules/mediastream/MediaDevices.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/mediastream/MediaDevices.h"
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMException.h"
@@ skipping 162 matching lines @@
                                                   registeredListener);
   if (!hasEventListeners())
     stopObserving();
 }
 
 bool MediaDevices::hasPendingActivity() const {
   DCHECK(m_stopped || m_observing == hasEventListeners());
   return m_observing;
 }
 
-void MediaDevices::contextDestroyed() {
+void MediaDevices::contextDestroyed(ExecutionContext*) {
   if (m_stopped)
     return;
 
   m_stopped = true;
   stopObserving();
 }
 
 void MediaDevices::suspend() {
   m_dispatchScheduledEventRunner->suspend();
 }
@@ skipping 52 matching lines @@
 }
 
 DEFINE_TRACE(MediaDevices) {
   visitor->trace(m_dispatchScheduledEventRunner);
   visitor->trace(m_scheduledEvents);
   EventTargetWithInlineData::trace(visitor);
   SuspendableObject::trace(visitor);
 }
 
 }  // namespace blink