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

Source/core/html/DateTimeInputType.h

Index: Source/core/html/DateTimeInputType.h
diff --git a/Source/core/html/DateTimeInputType.h b/Source/core/html/DateTimeInputType.h
index 78c15d50bb5b7ce7877f8bb00c47d9b6a241b47e..132d185eb02c89df7e43acc9c6a03c5bd3fbcfc3 100644
--- a/Source/core/html/DateTimeInputType.h
+++ b/Source/core/html/DateTimeInputType.h
@@ -46,10 +46,10 @@ typedef BaseChooserOnlyDateAndTimeInputType BaseDateTimeInputType;
 
 class DateTimeInputType : public BaseDateTimeInputType {
 public:
-    static PassOwnPtr<InputType> create(HTMLInputElement*);
+    static PassOwnPtr<InputType> create(Handle<HTMLInputElement>);
 
 private:
-    DateTimeInputType(HTMLInputElement* element) : BaseDateTimeInputType(element) { }
+    DateTimeInputType(Handle<HTMLInputElement> element) : BaseDateTimeInputType(element) { }
     virtual void attach() OVERRIDE;
     virtual const AtomicString& formControlType() const OVERRIDE;
     virtual DateComponents::Type dateType() const OVERRIDE;