2014-03-29  Antonio Gomes  <a1.gomes@sisa.samsung.com>

        WebCLEvent::getProfilingInfo should return unsigned long
        Issue #502

        Reviewed by Anthony.

        Fixes "Event Profiling" translated sampler from
        http://wolfviking0.github.io/webcl-translator/build_trans/index.html?sample=1&gl=off&title=Event%20Profiling&gpu

        * Modules/webcl/WebCLEvent.cpp:
        (WebCore::WebCLEvent::getProfilingInfo):