2014-01-13 Antonio Gomes <a1.gomes@sisa.samsung.com>
        Check events' context
        Issue #404

        Reviewed by Igor.

        WebCLEvents must share the same context of
        its associated command queue.

        * Modules/webcl/WebCLCommandQueue.cpp:
        (WebCore::WebCLCommandQueue::ccEventListFromWebCLEventList):
        * Modules/webcl/WebCLCommandQueue.h:
        * Modules/webcl/WebCLEvent.cpp:
        (WebCore::WebCLEvent::context):
        * Modules/webcl/WebCLEvent.h:
        * Modules/webcl/WebCLProgram.cpp:
        (WebCore::WebCLProgram::build):
        * Modules/webcl/WebCLUserEvent.cpp:
        (WebCore::WebCLUserEvent::context):
        * Modules/webcl/WebCLUserEvent.h: