Enable oilpan in modules/mediasource

Source/modules/mediasource/MediaSourceRegistry.cpp

 /*
  * Copyright (C) 2012 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 39 matching lines @@
     ASSERT(isMainThread());
 
     MediaSource* source = static_cast<MediaSource*>(registrable);
     source->addedToRegistry();
     m_mediaSources.set(url.string(), source);
 }
 
 void MediaSourceRegistry::unregisterURL(const KURL& url)
 {
     ASSERT(isMainThread());
-    WillBePersistentHeapHashMap<String, RefPtrWillBeMember<MediaSource> >::iterator iter = m_mediaSources.find(url.string());
+    PersistentHeapHashMap<String, Member<MediaSource> >::iterator iter = m_mediaSources.find(url.string());
     if (iter == m_mediaSources.end())
         return;
 
-    RefPtrWillBeRawPtr<MediaSource> source = iter->value;
+    MediaSource* source = iter->value;
     m_mediaSources.remove(iter);
     source->removedFromRegistry();
 }
 
 URLRegistrable* MediaSourceRegistry::lookup(const String& url)
 {
     ASSERT(isMainThread());
     return m_mediaSources.get(url);
 }
 
 MediaSourceRegistry::MediaSourceRegistry()
 {
     HTMLMediaSource::setRegistry(this);
 }
 
 } // namespace WebCore