Oilpan: add transition types to track interface objects.

Source/core/html/track/vtt/VTTCue.h

 /*
  * Copyright (c) 2013, Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef VTTCue_h
 #define VTTCue_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/html/track/TextTrackCue.h"
+#include "platform/heap/Handle.h"
 
 namespace WebCore {
 
 class Document;
 class ExecutionContext;
 class VTTCue;
 class VTTScanner;
 
 class VTTCueBox FINAL : public HTMLDivElement {
 public:
     static PassRefPtr<VTTCueBox> create(Document& document, VTTCue* cue)
     {
         return adoptRef(new VTTCueBox(document, cue));
     }
 
     VTTCue* getCue() const { return m_cue; }
     void applyCSSProperties(const IntSize& videoSize);
 
 private:
     VTTCueBox(Document&, VTTCue*);
 
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
-    VTTCue* m_cue;
+    RawPtrWillBePersistent<VTTCue> m_cue;
 };
 
 class VTTCue FINAL : public TextTrackCue, public ScriptWrappable {
 public:
-    static PassRefPtr<VTTCue> create(Document& document, double startTime, double endTime, const String& text)
+    static PassRefPtrWillBeRawPtr<VTTCue> create(Document& document, double startTime, double endTime, const String& text)
     {
-        return adoptRef(new VTTCue(document, startTime, endTime, text));
+        return adoptRefWillBeRefCountedGarbageCollected(new VTTCue(document, startTime, endTime, text));
     }
 
     virtual ~VTTCue();
 
     const String& vertical() const;
     void setVertical(const String&, ExceptionState&);
 
     bool snapToLines() const { return m_snapToLines; }
     void setSnapToLines(bool);
 
@@ skipping 54 matching lines @@
         NumberOfAlignments
     };
     CueAlignment getAlignment() const { return m_cueAlignment; }
 
     virtual ExecutionContext* executionContext() const OVERRIDE;
 
 #ifndef NDEBUG
     virtual String toString() const OVERRIDE;
 #endif
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 private:
     VTTCue(Document&, double startTime, double endTime, const String& text);
 
     Document& document() const;
 
     VTTCueBox& ensureDisplayTree();
     PassRefPtr<VTTCueBox> getDisplayTree(const IntSize& videoSize);
 
     virtual void cueDidChange() OVERRIDE;
 
@@ skipping 36 matching lines @@
     bool m_displayTreeShouldChange : 1;
     bool m_notifyRegion : 1;
 };
 
 // VTTCue is currently the only TextTrackCue subclass.
 DEFINE_TYPE_CASTS(VTTCue, TextTrackCue, cue, true, true);
 
 } // namespace WebCore
 
 #endif