Fix virtual/override/final usage in Source/modules/.

Source/modules/indexeddb/IDBCursorWithValue.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 24 matching lines @@
 namespace blink {
 
 class IDBAny;
 class IDBRequest;
 class IDBTransaction;
 
 class IDBCursorWithValue final : public IDBCursor {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static IDBCursorWithValue* create(PassOwnPtr<WebIDBCursor>, WebIDBCursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*);
-    virtual ~IDBCursorWithValue();
+    ~IDBCursorWithValue() override;
 
     // The value attribute defined in the IDL is simply implemented in IDBCursor (but not exposed via
     // its IDL). This is to make the implementation more simple while matching what the spec says.
 
-    virtual bool isKeyCursor() const override { return false; }
-    virtual bool isCursorWithValue() const override { return true; }
+    bool isKeyCursor() const override { return false; }
+    bool isCursorWithValue() const override { return true; }
 
 private:
     IDBCursorWithValue(PassOwnPtr<WebIDBCursor>, WebIDBCursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*);
 };
 
 DEFINE_TYPE_CASTS(IDBCursorWithValue, IDBCursor, cursor, cursor->isCursorWithValue(), cursor.isCursorWithValue());
 
 } // namespace blink
 
 #endif // IDBCursorWithValue_h