Enable Oilpan for ImageBitmapFactories::ImageBitmapLoader by default.

Source/modules/imagebitmap/ImageBitmapFactories.h

 /*
  * Copyright (c) 2013, 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 63 matching lines @@
     static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, ImageBitmap*, int sx, int sy, int sw, int sh, ExceptionState&);
 
     virtual ~ImageBitmapFactories() { }
 
     void trace(Visitor*);
 
 protected:
     static const char* supplementName();
 
 private:
-    class ImageBitmapLoader FINAL : public RefCountedWillBeGarbageCollectedFinalized<ImageBitmapLoader>, public FileReaderLoaderClient {
+    class ImageBitmapLoader FINAL : public GarbageCollectedFinalized<ImageBitmapLoader>, public FileReaderLoaderClient {
     public:
-        static PassRefPtrWillBeRawPtr<ImageBitmapLoader> create(ImageBitmapFactories& factory, const IntRect& cropRect, ScriptState* scriptState)
+        static ImageBitmapLoader* create(ImageBitmapFactories& factory, const IntRect& cropRect, ScriptState* scriptState)
         {
-            return adoptRefWillBeNoop(new ImageBitmapLoader(factory, cropRect, scriptState));
+            return new ImageBitmapLoader(factory, cropRect, scriptState);
         }
 
         void loadBlobAsync(ExecutionContext*, Blob*);
         ScriptPromise promise() { return m_resolver->promise(); }
 
         void trace(Visitor*);
 
         virtual ~ImageBitmapLoader() { }
 
     private:
@@ skipping 11 matching lines @@
         RawPtrWillBeMember<ImageBitmapFactories> m_factory;
         RefPtr<ScriptPromiseResolverWithContext> m_resolver;
         IntRect m_cropRect;
     };
 
     static ImageBitmapFactories& from(EventTarget&);
 
     template<class GlobalObject>
     static ImageBitmapFactories& fromInternal(GlobalObject&);
 
-    void addLoader(PassRefPtrWillBeRawPtr<ImageBitmapLoader>);
+    void addLoader(ImageBitmapLoader*);
     void didFinishLoading(ImageBitmapLoader*);
 
-    WillBeHeapHashSet<RefPtrWillBeMember<ImageBitmapLoader> > m_pendingLoaders;
+    PersistentHeapHashSetWillBeHeapHashSet<Member<ImageBitmapLoader> > m_pendingLoaders;
 };
 
 } // namespace WebCore
 
 #endif // ImageBitmapFactories_h