Oilpan: fix build after r188764.

Source/core/storage/StorageNamespaceController.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef StorageNamespaceController_h
 #define StorageNamespaceController_h
 
 #include "core/page/Page.h"
 #include "platform/Supplementable.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class StorageClient;
 class StorageNamespace;
 
-class StorageNamespaceController final : public NoBaseWillBeGarbageCollected<StorageNamespaceController>, public WillBeHeapSupplement<Page> {
+class StorageNamespaceController final : public NoBaseWillBeGarbageCollectedFinalized<StorageNamespaceController>, public WillBeHeapSupplement<Page> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(StorageNamespaceController);
 public:
     StorageNamespace* sessionStorage(bool optionalCreate = true);
+    ~StorageNamespaceController();
 
     static void provideStorageNamespaceTo(Page&, StorageClient*);
     static StorageNamespaceController* from(Page* page) { return static_cast<StorageNamespaceController*>(WillBeHeapSupplement<Page>::from(page, supplementName())); }
 
     virtual void trace(Visitor* visitor) override { WillBeHeapSupplement<Page>::trace(visitor); }
 
 private:
     explicit StorageNamespaceController(StorageClient*);
     static const char* supplementName();
     OwnPtr<StorageNamespace> m_sessionStorage;
     StorageClient* m_client;
 };
 
 } // namespace blink
 
 #endif // StorageNamespaceController_h
-