Oilpan: Allocate all EventTarget derived types on the manged heap.

Source/core/html/ime/InputMethodContext.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 28 matching lines @@
 #include "wtf/RefPtr.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class ExecutionContext;
 class InputMethodController;
 class Node;
 
-class InputMethodContext FINAL : public ScriptWrappable, public EventTargetWithInlineData {
+class InputMethodContext FINAL : public NoBaseWillBeRefCountedGarbageCollected<InputMethodContext>, public ScriptWrappable, public EventTargetWithInlineData {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(InputMethodContext);
 public:
-    static PassOwnPtr<InputMethodContext> create(HTMLElement*);
+    static PassOwnPtrWillBeRawPtr<InputMethodContext> create(HTMLElement*);
     virtual ~InputMethodContext();
 
+#if ENABLE(OILPAN)
+    using RefCountedGarbageCollected<InputMethodContext>::ref;
+    using RefCountedGarbageCollected<InputMethodContext>::deref;
+#else
     void ref() { m_element->ref(); }
     void deref() { m_element->deref(); }
+#endif
 
     String locale() const;
     HTMLElement* target() const;
     unsigned compositionStartOffset();
     unsigned compositionEndOffset();
     void confirmComposition();
 
     String compositionText() const;
     int selectionStart() const;
     int selectionEnd() const;
     const Vector<unsigned>& segments();
 
     virtual const AtomicString& interfaceName() const OVERRIDE;
     virtual ExecutionContext* executionContext() const OVERRIDE;
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(candidatewindowshow);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(candidatewindowupdate);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(candidatewindowhide);
 
     void dispatchCandidateWindowShowEvent();
     void dispatchCandidateWindowUpdateEvent();
     void dispatchCandidateWindowHideEvent();
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 private:
     InputMethodContext(HTMLElement*);
     bool hasFocus() const;
     CompositionUnderline selectedSegment() const;
     InputMethodController& inputMethodController() const;
 
     virtual void refEventTarget() OVERRIDE { ref(); }
     virtual void derefEventTarget() OVERRIDE { deref(); }
 
-    HTMLElement* m_element;
+    RawPtrWillBeMember<HTMLElement> m_element;
     Vector<unsigned> m_segments;
 };
 
 } // namespace WebCore
 
 #endif // InputMethodContext_h