Add missing prefinalizer registration after r358299.

third_party/WebKit/Source/platform/mediastream/MediaStreamComponent.cpp

 /*
  * Copyright (C) 2011 Ericsson AB. All rights reserved.
  * 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.
@@ skipping 38 matching lines @@
     return new MediaStreamComponent(id, source);
 }
 
 MediaStreamComponent::MediaStreamComponent(const String& id, MediaStreamSource* source)
     : m_source(source)
     , m_id(id)
     , m_enabled(true)
     , m_muted(false)
 {
     ASSERT(m_id.length());
+    ThreadState::current()->registerPreFinalizer(this);
 }
 
 void MediaStreamComponent::dispose()
 {
     m_extraData.clear();
 }
 
 #if ENABLE(WEB_AUDIO)
 void MediaStreamComponent::AudioSourceProviderImpl::wrap(WebAudioSourceProvider* provider)
 {
@@ skipping 22 matching lines @@
     m_webAudioSourceProvider->provideInput(webAudioData, framesToProcess);
 }
 #endif // #if ENABLE(WEB_AUDIO)
 
 DEFINE_TRACE(MediaStreamComponent)
 {
     visitor->trace(m_source);
 }
 
 } // namespace blink