Enable oilpan in modules/mediasource

Source/modules/mediasource/SourceBuffer.cpp

Index: Source/modules/mediasource/SourceBuffer.cpp
diff --git a/Source/modules/mediasource/SourceBuffer.cpp b/Source/modules/mediasource/SourceBuffer.cpp
index 6c73217a659b0150ef59534632c796b29991c85a..2211b118f538e6c2c874969cfd51d4c3f82be3ef 100644
--- a/Source/modules/mediasource/SourceBuffer.cpp
+++ b/Source/modules/mediasource/SourceBuffer.cpp
@@ -72,11 +72,11 @@ static bool throwExceptionIfRemovedOrUpdating(bool isRemoved, bool isUpdating, E
 
 } // namespace
 
-PassRefPtrWillBeRawPtr<SourceBuffer> SourceBuffer::create(PassOwnPtr<WebSourceBuffer> webSourceBuffer, MediaSource* source, GenericEventQueue* asyncEventQueue)
+SourceBuffer* SourceBuffer::create(PassOwnPtr<WebSourceBuffer> webSourceBuffer, MediaSource* source, GenericEventQueue* asyncEventQueue)
 {
-    RefPtrWillBeRawPtr<SourceBuffer> sourceBuffer(adoptRefWillBeRefCountedGarbageCollected(new SourceBuffer(webSourceBuffer, source, asyncEventQueue)));
+    SourceBuffer* sourceBuffer(adoptRefCountedGarbageCollected(new SourceBuffer(webSourceBuffer, source, asyncEventQueue)));
     sourceBuffer->suspendIfNeeded();
-    return sourceBuffer.release();
+    return sourceBuffer;
 }
 
 SourceBuffer::SourceBuffer(PassOwnPtr<WebSourceBuffer> webSourceBuffer, MediaSource* source, GenericEventQueue* asyncEventQueue)