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

Source/core/html/MonthInputType.h

Index: Source/core/html/MonthInputType.h
diff --git a/Source/core/html/MonthInputType.h b/Source/core/html/MonthInputType.h
index 2e11cd4af7a31ca07f7774ef767c79b68fac20cf..7db3386a7d2cbde5429d9e954bc3a87032297254 100644
--- a/Source/core/html/MonthInputType.h
+++ b/Source/core/html/MonthInputType.h
@@ -44,10 +44,10 @@ typedef BaseChooserOnlyDateAndTimeInputType BaseMonthInputType;
 
 class MonthInputType : public BaseMonthInputType {
 public:
-    static PassOwnPtr<InputType> create(HTMLInputElement*);
+    static PassOwnPtr<InputType> create(Handle<HTMLInputElement>);
 
 private:
-    MonthInputType(HTMLInputElement* element) : BaseMonthInputType(element) { }
+    MonthInputType(Handle<HTMLInputElement> element) : BaseMonthInputType(element) { }
     virtual void attach() OVERRIDE;
     virtual const AtomicString& formControlType() const OVERRIDE;
     virtual DateComponents::Type dateType() const OVERRIDE;