can we develop a w3c widget engine for the webkit?

hello:
    now there are many w3c widget engine versions has been developed,but it
almost develped with java base on JAVAVM, whether or not we can building a
w3c widget engine written with c/c++ language which as a plugin of webkit.

    thank you  very much.
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Best Regards
Shi mengjun(Felixshi)