2013-02-15  Sharath Kamath  <kamath.sharath@gmail.com>

        CreateImageWithDescriptor must return WebCLImage object.
        Issue #122

        Reviewed by Antonio.

        CreateImageWithDescriptor returns a instance of WebCLMemoryObject.
        This must be changed to WebCLImage.
        Can be done in the custom binding for this method.

        No new tests.

        * bindings/js/JSWebCLContextCustom.cpp:
        (WebCore::JSWebCLContext::createImageWithDescriptor): Change return object to WebCLImage.