Enable oilpan in modules/mediasource

Source/modules/mediasource/MediaSourceRegistry.cpp

Index: Source/modules/mediasource/MediaSourceRegistry.cpp
diff --git a/Source/modules/mediasource/MediaSourceRegistry.cpp b/Source/modules/mediasource/MediaSourceRegistry.cpp
index 439d1b1a81c3065311a45c88c750f998ef81a1bc..eb98331b6290029634344b42bf54d20088c09751 100644
--- a/Source/modules/mediasource/MediaSourceRegistry.cpp
+++ b/Source/modules/mediasource/MediaSourceRegistry.cpp
@@ -57,11 +57,11 @@ void MediaSourceRegistry::registerURL(SecurityOrigin*, const KURL& url, URLRegis
 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();
 }