Oilpan: have Storage objects reside on the heap by default.

Source/modules/storage/DOMWindowStorageController.h

Index: Source/modules/storage/DOMWindowStorageController.h
diff --git a/Source/modules/storage/DOMWindowStorageController.h b/Source/modules/storage/DOMWindowStorageController.h
index d6f927dffc164f25511788fe457296d8fbe6e8f2..f2fe4ee592baae967abf15902986f28c52f40515 100644
--- a/Source/modules/storage/DOMWindowStorageController.h
+++ b/Source/modules/storage/DOMWindowStorageController.h
@@ -16,10 +16,10 @@ namespace blink {
 class Document;
 class Event;
 
-class MODULES_EXPORT DOMWindowStorageController final : public NoBaseWillBeGarbageCollectedFinalized<DOMWindowStorageController>, public WillBeHeapSupplement<Document>, public DOMWindowLifecycleObserver {
+class MODULES_EXPORT DOMWindowStorageController final : public NoBaseWillBeGarbageCollected<DOMWindowStorageController>, public WillBeHeapSupplement<Document>, public DOMWindowLifecycleObserver {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMWindowStorageController);
+    DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(DOMWindowStorageController);
 public:
-    virtual ~DOMWindowStorageController();
     DECLARE_VIRTUAL_TRACE();
 
     static const char* supplementName();