Enable oilpan in modules/mediasource

Source/modules/mediasource/MediaSource.cpp

Index: Source/modules/mediasource/MediaSource.cpp
diff --git a/Source/modules/mediasource/MediaSource.cpp b/Source/modules/mediasource/MediaSource.cpp
index 9dc2ff704c43fcc5da84299cfd37548e43f3b953..3ac5fa4afe25e6561e7abb0744916248691055ed 100644
--- a/Source/modules/mediasource/MediaSource.cpp
+++ b/Source/modules/mediasource/MediaSource.cpp
@@ -87,11 +87,11 @@ const AtomicString& MediaSource::endedKeyword()
     return ended;
 }
 
-PassRefPtrWillBeRawPtr<MediaSource> MediaSource::create(ExecutionContext* context)
+MediaSource* MediaSource::create(ExecutionContext* context)
 {
-    RefPtrWillBeRawPtr<MediaSource> mediaSource(adoptRefWillBeRefCountedGarbageCollected(new MediaSource(context)));
+    MediaSource* mediaSource(adoptRefCountedGarbageCollected(new MediaSource(context)));
     mediaSource->suspendIfNeeded();
-    return mediaSource.release();
+    return mediaSource;
 }
 
 MediaSource::MediaSource(ExecutionContext* context)
@@ -150,18 +150,17 @@ SourceBuffer* MediaSource::addSourceBuffer(const String& type, ExceptionState& e
         return 0;
     }
 
-    RefPtrWillBeRawPtr<SourceBuffer> buffer = SourceBuffer::create(webSourceBuffer.release(), this, m_asyncEventQueue.get());
+    SourceBuffer* buffer = SourceBuffer::create(webSourceBuffer.release(), this, m_asyncEventQueue.get());
     // 6. Add the new object to sourceBuffers and fire a addsourcebuffer on that object.
     m_sourceBuffers->add(buffer);
     m_activeSourceBuffers->add(buffer);
     // 7. Return the new object to the caller.
-    return buffer.get();
+    return buffer;
 }
 
 void MediaSource::removeSourceBuffer(SourceBuffer* buffer, ExceptionState& exceptionState)
 {
     WTF_LOG(Media, "MediaSource::removeSourceBuffer() %p", this);
-    RefPtr<SourceBuffer> protect(buffer);
 
     // 2.2 https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#widl-MediaSource-removeSourceBuffer-void-SourceBuffer-sourceBuffer
 
@@ -260,7 +259,9 @@ ExecutionContext* MediaSource::executionContext() const
 
 void MediaSource::trace(Visitor* visitor)
 {
+#if ENABLE(OILPAN)
     visitor->trace(m_asyncEventQueue);
+#endif
     visitor->trace(m_sourceBuffers);
     visitor->trace(m_activeSourceBuffers);
     EventTargetWithInlineData::trace(visitor);