Revert of Oilpan: Move MediaStreamSource, MediaStreamComponent and MediaStreamDescriptor

Source/platform/exported/WebMediaStreamSource.cpp

 /*
  * Copyright (C) 2011 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 51 matching lines @@
     ASSERT(m_owner);
     return WebMediaStreamSource(m_owner);
 }
 
 void WebMediaStreamSource::ExtraData::setOwner(MediaStreamSource* owner)
 {
     ASSERT(!m_owner);
     m_owner = owner;
 }
 
-WebMediaStreamSource::WebMediaStreamSource(MediaStreamSource* mediaStreamSource)
+WebMediaStreamSource::WebMediaStreamSource(const PassRefPtr<MediaStreamSource>& mediaStreamSource)
     : m_private(mediaStreamSource)
 {
 }
 
 WebMediaStreamSource& WebMediaStreamSource::operator=(MediaStreamSource* mediaStreamSource)
 {
     m_private = mediaStreamSource;
     return *this;
 }
 
 void WebMediaStreamSource::assign(const WebMediaStreamSource& other)
 {
     m_private = other.m_private;
 }
 
 void WebMediaStreamSource::reset()
 {
     m_private.reset();
 }
 
+WebMediaStreamSource::operator PassRefPtr<MediaStreamSource>() const
+{
+    return m_private.get();
+}
+
 WebMediaStreamSource::operator MediaStreamSource*() const
 {
     return m_private.get();
 }
 
 void WebMediaStreamSource::initialize(const WebString& id, Type type, const WebString& name)
 {
     m_private = MediaStreamSource::create(id, static_cast<MediaStreamSource::Type>(type), name);
 }
 
@@ skipping 114 matching lines @@
         ConsumerWrapper* wrapper = static_cast<ConsumerWrapper*>(it->get());
         if (wrapper->consumer() == consumer) {
             m_private->removeAudioConsumer(wrapper);
             return true;
         }
     }
     return false;
 }
 
 } // namespace blink