2014-01-27  Sharath Kamath  <s.kamath@samsung.com>

        WebCLProgram::build must validate the devices sent.

        Fixed #421

        Reviewed by Antonio.

        * Modules/webcl/WebCLContext.h:
        (WebCore::WebCLContext::contextProperties):
        * Modules/webcl/WebCLProgram.cpp:
        (WebCore::WebCLProgram::getBuildInfo):
        (WebCore::WebCLProgram::build):
        (WebCore::WebCLProgram::ccDeviceListFromWebCLDeviceList):
        * Modules/webcl/WebCLProgram.h: