Oilpan: move custom element objects to the heap.

Source/core/dom/custom/CustomElementCallbackQueue.cpp

Index: Source/core/dom/custom/CustomElementCallbackQueue.cpp
diff --git a/Source/core/dom/custom/CustomElementCallbackQueue.cpp b/Source/core/dom/custom/CustomElementCallbackQueue.cpp
index fe74598f9b85b95e2e1b75b4054de70f12f691ee..d20bb901174d21f44624ec221933940a34b5d999 100644
--- a/Source/core/dom/custom/CustomElementCallbackQueue.cpp
+++ b/Source/core/dom/custom/CustomElementCallbackQueue.cpp
@@ -33,12 +33,12 @@
 
 namespace WebCore {
 
-PassOwnPtr<CustomElementCallbackQueue> CustomElementCallbackQueue::create(PassRefPtr<Element> element)
+PassOwnPtrWillBeRawPtr<CustomElementCallbackQueue> CustomElementCallbackQueue::create(PassRefPtrWillBeRawPtr<Element> element)
 {
-    return adoptPtr(new CustomElementCallbackQueue(element));
+    return adoptPtrWillBeNoop(new CustomElementCallbackQueue(element));
 }
 
-CustomElementCallbackQueue::CustomElementCallbackQueue(PassRefPtr<Element> element)
+CustomElementCallbackQueue::CustomElementCallbackQueue(PassRefPtrWillBeRawPtr<Element> element)
     : m_element(element)
     , m_owner(-1)
     , m_index(0)
@@ -72,4 +72,9 @@ bool CustomElementCallbackQueue::processInElementQueue(ElementQueueId caller)
     return didWork;
 }
 
+void CustomElementCallbackQueue::trace(Visitor* visitor)
+{
+    visitor->trace(m_element);
+}
+
 } // namespace WebCore