Update remaining core classes to use OVERRIDE / FINAL when needed

Source/core/storage/Storage.h

Index: Source/core/storage/Storage.h
diff --git a/Source/core/storage/Storage.h b/Source/core/storage/Storage.h
index 05da1cfe6be1dc2b12a7f2545c406584a7743b47..6a04a5a0c6b4ead8a9ba895471948906456b31f4 100644
--- a/Source/core/storage/Storage.h
+++ b/Source/core/storage/Storage.h
@@ -39,10 +39,10 @@ namespace WebCore {
 class ExceptionState;
 class Frame;
 
-class Storage : public ScriptWrappable, public RefCounted<Storage>, public DOMWindowProperty {
+class Storage FINAL : public ScriptWrappable, public RefCounted<Storage>, public DOMWindowProperty {
 public:
     static PassRefPtr<Storage> create(Frame*, PassOwnPtr<StorageArea>);
-    ~Storage();
+    virtual ~Storage();
 
     unsigned length(ExceptionState& ec) const { return m_storageArea->length(ec, m_frame); }
     String key(unsigned index, ExceptionState& ec) const { return m_storageArea->key(index, ec, m_frame); }