[oilpan] Completely move HTMLFormControlElement's hierarchy to the managed heap

Source/core/html/ImageInputType.h

Index: Source/core/html/ImageInputType.h
diff --git a/Source/core/html/ImageInputType.h b/Source/core/html/ImageInputType.h
index ebaca9078ee89a0de81ee2919637dfa1214b1435..69b297b5701129185d5a26b507ef38534f0d9ae4 100644
--- a/Source/core/html/ImageInputType.h
+++ b/Source/core/html/ImageInputType.h
@@ -41,10 +41,10 @@ namespace WebCore {
 
 class ImageInputType : public BaseButtonInputType {
 public:
-    static PassOwnPtr<InputType> create(HTMLInputElement*);
+    static PassOwnPtr<InputType> create(Handle<HTMLInputElement>);
 
 private:
-    ImageInputType(HTMLInputElement*);
+    ImageInputType(Handle<HTMLInputElement>);
     virtual const AtomicString& formControlType() const OVERRIDE;
     virtual bool isFormDataAppendable() const OVERRIDE;
     virtual bool appendFormData(FormDataList&, bool) const OVERRIDE;