2014-05-15  Shilpa Shri  <shilpa.shri@samsung.com>

        Correct exception name in WebCLCommandQueue interface.

        Fixed #523

        Reviewed by Sharath and Antonio.

        Conformance tests:
        conformance/bindingTesting/queues/cl_commandQueue_enqueueReadBuffer.html
        conformance/bindingTesting/queues/cl_commandQueue_enqueueReadBufferRect.html
        conformance/bindingTesting/queues/cl_commandQueue_enqueueReadImage.html
        conformance/bindingTesting/queues/cl_commandQueue_enqueueWriteBuffer.html
        conformance/bindingTesting/queues/cl_commandQueue_enqueueWriteBufferRect.html
        conformance/bindingTesting/queues/cl_commandQueue_enqueueWriteImage.html

        * Modules/webcl/WebCLCommandQueue.cpp:
        (WebCore::WebCLCommandQueue::ccEventListFromWebCLEventList):