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

Source/core/html/RadioInputType.cpp

Index: Source/core/html/RadioInputType.cpp
diff --git a/Source/core/html/RadioInputType.cpp b/Source/core/html/RadioInputType.cpp
index 10c1c2cd148d87b5f167511f4e88aa50af971045..7a95037cacbb17cd7e9628c457548336498c7bba 100644
--- a/Source/core/html/RadioInputType.cpp
+++ b/Source/core/html/RadioInputType.cpp
@@ -38,7 +38,7 @@ namespace WebCore {
 
 using namespace HTMLNames;
 
-PassOwnPtr<InputType> RadioInputType::create(HTMLInputElement* element)
+PassOwnPtr<InputType> RadioInputType::create(Handle<HTMLInputElement> element)
 {
     return adoptPtr(new RadioInputType(element));
 }
@@ -84,7 +84,7 @@ void RadioInputType::handleKeydownEvent(KeyboardEvent* event)
 
     // We can only stay within the form's children if the form hasn't been demoted to a leaf because
     // of malformed HTML.
-    Node* node = element();
+    Node* node = Handle<HTMLInputElement>(element()).raw();
     while ((node = (forward ? NodeTraversal::next(node) : NodeTraversal::previous(node)))) {
         // Once we encounter a form element, we know we're through.
         if (node->hasTagName(formTag))
@@ -92,11 +92,11 @@ void RadioInputType::handleKeydownEvent(KeyboardEvent* event)
         // Look for more radio buttons.
         if (!node->hasTagName(inputTag))
             continue;
-        HTMLInputElement* inputElement = static_cast<HTMLInputElement*>(node);
+        Handle<HTMLInputElement> inputElement(static_cast<HTMLInputElement*>(node));
         if (inputElement->form() != element()->form())
             break;
         if (inputElement->isRadioButton() && inputElement->name() == element()->name() && inputElement->isFocusable()) {
-            document->setFocusedNode(inputElement);
+            document->setFocusedNode(inputElement.raw());
             inputElement->dispatchSimulatedClick(event, SendNoEvents, DoNotShowPressedLook);
             event->setDefaultHandled();
             return;
@@ -129,7 +129,7 @@ bool RadioInputType::isKeyboardFocusable(KeyboardEvent* event) const
     // skip any other elements in the group.
     Node* currentFocusedNode = element()->document()->focusedNode();
     if (currentFocusedNode && currentFocusedNode->hasTagName(inputTag)) {
-        HTMLInputElement* focusedInput = static_cast<HTMLInputElement*>(currentFocusedNode);
+        Handle<HTMLInputElement> focusedInput(static_cast<HTMLInputElement*>(currentFocusedNode));
         if (focusedInput->isRadioButton() && focusedInput->form() == element()->form() && focusedInput->name() == element()->name())
             return false;
     }
@@ -168,7 +168,7 @@ void RadioInputType::didDispatchClick(Event* event, const ClickHandlingState& st
     if (event->defaultPrevented() || event->defaultHandled()) {
         // Restore the original selected radio button if possible.
         // Make sure it is still a radio button and only do the restoration if it still belongs to our group.
-        HTMLInputElement* checkedRadioButton = state.checkedRadioButton.get();
+        Handle<HTMLInputElement> checkedRadioButton = state.checkedRadioButton;
         if (checkedRadioButton
                 && checkedRadioButton->isRadioButton()
                 && checkedRadioButton->form() == element()->form()