Oilpan: move custom element objects to the heap.

Source/core/dom/custom/CustomElementMicrotaskDispatcher.h

Index: Source/core/dom/custom/CustomElementMicrotaskDispatcher.h
diff --git a/Source/core/dom/custom/CustomElementMicrotaskDispatcher.h b/Source/core/dom/custom/CustomElementMicrotaskDispatcher.h
index a3f7669c94426d2b05ebba69e2bf1c65e59f7ae3..a9cda9f2ef2d3c67555a5bf52f91469ed21c1172 100644
--- a/Source/core/dom/custom/CustomElementMicrotaskDispatcher.h
+++ b/Source/core/dom/custom/CustomElementMicrotaskDispatcher.h
@@ -6,6 +6,7 @@
 #define CustomElementMicrotaskDispatcher_h
 
 #include "core/dom/custom/CustomElementMicrotaskQueue.h"
+#include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/Vector.h"
@@ -17,20 +18,22 @@ class CustomElementMicrotaskImportStep;
 class CustomElementMicrotaskStep;
 class HTMLImportLoader;
 
-class CustomElementMicrotaskDispatcher {
+class CustomElementMicrotaskDispatcher FINAL : public NoBaseWillBeGarbageCollectedFinalized<CustomElementMicrotaskDispatcher> {
     WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskDispatcher);
 public:
     ~CustomElementMicrotaskDispatcher() { }
 
     static CustomElementMicrotaskDispatcher& instance();
 
-    void enqueue(HTMLImportLoader*, PassOwnPtr<CustomElementMicrotaskStep>);
+    void enqueue(HTMLImportLoader*, PassOwnPtrWillBeRawPtr<CustomElementMicrotaskStep>);
     void enqueue(CustomElementCallbackQueue*);
 
     void importDidFinish(CustomElementMicrotaskImportStep*);
 
     bool elementQueueIsEmpty() { return m_elements.isEmpty(); }
 
+    void trace(Visitor*);
+
 #if !defined(NDEBUG)
     void show();
 #endif
@@ -50,8 +53,8 @@ private:
         DispatchingCallbacks
     } m_phase;
 
-    RefPtr<CustomElementMicrotaskQueue> m_resolutionAndImports;
-    Vector<CustomElementCallbackQueue*> m_elements;
+    RefPtrWillBeMember<CustomElementMicrotaskQueue> m_resolutionAndImports;
+    WillBeHeapVector<RawPtrWillBeMember<CustomElementCallbackQueue> > m_elements;
 };
 
 }