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

Source/core/html/HTMLFormControlElement.cpp

Index: Source/core/html/HTMLFormControlElement.cpp
diff --git a/Source/core/html/HTMLFormControlElement.cpp b/Source/core/html/HTMLFormControlElement.cpp
index 5b2b9652f610d42dd7d905ac1994f3756ab47b6f..e13c027b7a030c8b5f5b68be8e3cec708e846145 100644
--- a/Source/core/html/HTMLFormControlElement.cpp
+++ b/Source/core/html/HTMLFormControlElement.cpp
@@ -103,13 +103,13 @@ bool HTMLFormControlElement::formNoValidate() const
 
 void HTMLFormControlElement::updateAncestorDisabledState() const
 {
-    HTMLFieldSetElement* fieldSetAncestor = 0;
+    Handle<HTMLFieldSetElement> fieldSetAncestor;
     ContainerNode* legendAncestor = 0;
     for (ContainerNode* ancestor = parentNode(); ancestor; ancestor = ancestor->parentNode()) {
         if (!legendAncestor && ancestor->hasTagName(legendTag))
             legendAncestor = ancestor;
         if (ancestor->hasTagName(fieldsetTag)) {
-            fieldSetAncestor = static_cast<HTMLFieldSetElement*>(ancestor);
+            fieldSetAncestor = Handle<HTMLFieldSetElement>(static_cast<HTMLFieldSetElement*>(ancestor));
             break;
         }
     }
@@ -170,7 +170,7 @@ void HTMLFormControlElement::requiredAttributeChanged()
     setNeedsStyleRecalc();
 }
 
-static bool shouldAutofocus(HTMLFormControlElement* element)
+static bool shouldAutofocus(Handle<HTMLFormControlElement> element)
 {
     if (!element->fastHasAttribute(autofocusAttr))
         return false;
@@ -189,7 +189,7 @@ static bool shouldAutofocus(HTMLFormControlElement* element)
     // FIXME: Should this set of hasTagName checks be replaced by a
     // virtual member function?
     if (element->hasTagName(inputTag))
-        return !static_cast<HTMLInputElement*>(element)->isInputTypeHidden();
+        return !Handle<HTMLInputElement>::cast(element)->isInputTypeHidden();
     if (element->hasTagName(selectTag))
         return true;
     if (element->hasTagName(keygenTag))
@@ -220,7 +220,7 @@ void HTMLFormControlElement::attach()
     if (renderer())
         renderer()->updateFromElement();
 
-    if (shouldAutofocus(this)) {
+    if (shouldAutofocus(Handle<HTMLFormControlElement>(this))) {
         setAutofocused();
         ref();
         queuePostAttachCallback(focusPostAttach, this);
@@ -398,7 +398,7 @@ void HTMLFormControlElement::updateVisibleValidationMessage()
     if (renderer() && willValidate())
         message = validationMessage().stripWhiteSpace();
     if (!m_validationMessage)
-        m_validationMessage = ValidationMessage::create(this);
+        m_validationMessage = ValidationMessage::create(Handle<HTMLFormControlElement>(this));
     m_validationMessage->updateValidationMessage(message);
 }
 
@@ -473,13 +473,13 @@ bool HTMLFormControlElement::isDefaultButtonForForm() const
     return isSuccessfulSubmitButton() && form() && form()->defaultButton() == this;
 }
 
-HTMLFormControlElement* HTMLFormControlElement::enclosingFormControlElement(Node* node)
+Result<HTMLFormControlElement> HTMLFormControlElement::enclosingFormControlElement(Node* node)
 {
     for (; node; node = node->parentNode()) {
         if (node->isElementNode() && toElement(node)->isFormControlElement())
-            return static_cast<HTMLFormControlElement*>(node);
+            return Handle<HTMLFormControlElement>(static_cast<HTMLFormControlElement*>(node));
     }
-    return 0;
+    return nullptr;
 }
 
 void HTMLFormControlElement::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
@@ -489,4 +489,9 @@ void HTMLFormControlElement::reportMemoryUsage(MemoryObjectInfo* memoryObjectInf
     info.addMember(m_validationMessage, "validationMessage");
 }
 
+void HTMLFormControlElement::acceptHeapVisitor(Visitor* visitor) const
+{
+    LabelableElement::acceptHeapVisitor(visitor);
+}
+
 } // namespace Webcore