Modify the GL renderer's functor to pass the clip to WebView

public:

    Functor() {}

    virtual ~Functor() {}

    virtual status_t operator ()() { return true; }

    virtual status_t operator ()(float* data, uint32_t len) { return true; }

    virtual status_t operator ()(int what, void* data) { return NO_ERROR; }

};

}; // namespace android