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

Source/core/html/SubmitInputType.cpp

Index: Source/core/html/SubmitInputType.cpp
diff --git a/Source/core/html/SubmitInputType.cpp b/Source/core/html/SubmitInputType.cpp
index 1cb2c636eb902c200614bb44fda8bb08b56eb2f6..16ee3179bac90fe2b0e52462252a1391ded09187 100644
--- a/Source/core/html/SubmitInputType.cpp
+++ b/Source/core/html/SubmitInputType.cpp
@@ -42,7 +42,7 @@
 
 namespace WebCore {
 
-PassOwnPtr<InputType> SubmitInputType::create(HTMLInputElement* element)
+PassOwnPtr<InputType> SubmitInputType::create(Handle<HTMLInputElement> element)
 {
     return adoptPtr(new SubmitInputType(element));
 }
@@ -67,7 +67,7 @@ bool SubmitInputType::supportsRequired() const
 
 void SubmitInputType::handleDOMActivateEvent(Event* event)
 {
-    RefPtr<HTMLInputElement> element = this->element();
+    Handle<HTMLInputElement> element = this->element();
     if (element->isDisabledFormControl() || !element->form())
         return;
     element->setActivatedSubmit(true);