2014-03-11  Arnaud Renevier  <a.renevier@samsung.com>

        Refactor exception handling.

        The goal is to put all WebKit specific code in a single file. That way,
        porting to blink will be more easy.

        We create a function setExceptionFromComputeErrorCode which sets
        exception code to the code matching the computeContext error.

        We also create a special function  setExtensionsNotEnabledException
        because EXTENSION_NOT_ENABLED doesn't have a matching computeContext
        error code.

        And also, we create a willThrowException function that returns true if
        the exceptionCode has been set to an error code.

        Lastly, we define ExceptionObject to be ExceptionCode. Then, when
        porting to blink, we'll be able to define ExceptionObject to be
        ExceptionState, and be able to call the 3 functions without
        modifications.

        Bug #478

        Reviewed by NOBODY (OOPS!).

        No new tests (OOPS!).

        * Modules/webcl/WebCL.cpp:
        (WebCore::WebCL::getPlatforms):
        (WebCore::WebCL::waitForEvents):
        (WebCore::WebCL::createContext):
        * Modules/webcl/WebCL.h:
        * Modules/webcl/WebCLBuffer.cpp:
        (WebCore::WebCLBuffer::create):
        (WebCore::WebCLBuffer::createSubBuffer):
        * Modules/webcl/WebCLBuffer.h:
        * Modules/webcl/WebCLCommandQueue.cpp:
        (WebCore::WebCLCommandQueue::create):
        (WebCore::WebCLCommandQueue::getInfo):
        (WebCore::WebCLCommandQueue::ccEventListFromWebCLEventList):
        (WebCore::WebCLCommandQueue::computeEventFromWebCLEventIfApplicable):
        (WebCore::WebCLCommandQueue::enqueueWriteBufferBase):
        (WebCore::WebCLCommandQueue::enqueueWriteBuffer):
        (WebCore::WebCLCommandQueue::enqueueWriteBufferRectBase):
        (WebCore::WebCLCommandQueue::enqueueWriteBufferRect):
        (WebCore::WebCLCommandQueue::enqueueReadBufferBase):
        (WebCore::WebCLCommandQueue::enqueueReadBuffer):
        (WebCore::WebCLCommandQueue::enqueueReadImageBase):
        (WebCore::WebCLCommandQueue::enqueueReadImage):
        (WebCore::WebCLCommandQueue::enqueueReadBufferRectBase):
        (WebCore::WebCLCommandQueue::enqueueReadBufferRect):
        (WebCore::WebCLCommandQueue::enqueueNDRangeKernel):
        (WebCore::WebCLCommandQueue::enqueueWaitForEvents):
        (WebCore::WebCLCommandQueue::finish):
        (WebCore::WebCLCommandQueue::flush):
        (WebCore::WebCLCommandQueue::enqueueWriteImageBase):
        (WebCore::WebCLCommandQueue::enqueueWriteImage):
        (WebCore::WebCLCommandQueue::enqueueCopyImage):
        (WebCore::WebCLCommandQueue::enqueueCopyImageToBuffer):
        (WebCore::WebCLCommandQueue::enqueueCopyBufferToImage):
        (WebCore::WebCLCommandQueue::enqueueCopyBuffer):
        (WebCore::WebCLCommandQueue::enqueueCopyBufferRect):
        (WebCore::WebCLCommandQueue::enqueueBarrier):
        (WebCore::WebCLCommandQueue::enqueueMarker):
        (WebCore::WebCLCommandQueue::enqueueAcquireGLObjects):
        (WebCore::WebCLCommandQueue::enqueueReleaseGLObjects):
        * Modules/webcl/WebCLCommandQueue.h:
        * Modules/webcl/WebCLContext.cpp:
        (WebCore::WebCLContext::create):
        (WebCore::WebCLContext::getInfo):
        (WebCore::WebCLContext::createCommandQueue):
        (WebCore::WebCLContext::createProgram):
        (WebCore::WebCLContext::postCreateCommandQueue):
        (WebCore::WebCLContext::postCreateBuffer):
        (WebCore::WebCLContext::createBufferBase):
        (WebCore::WebCLContext::createBuffer):
        (WebCore::WebCLContext::createImage2DBase):
        (WebCore::WebCLContext::createImage):
        (WebCore::WebCLContext::createSampler):
        (WebCore::WebCLContext::createUserEvent):
        (WebCore::WebCLContext::getSupportedImageFormats):
        (WebCore::WebCLContext::createFromGLBuffer):
        (WebCore::WebCLContext::createFromGLRenderbuffer):
        (WebCore::WebCLContext::createFromGLTexture):
        * Modules/webcl/WebCLContext.h:
        * Modules/webcl/WebCLDevice.cpp:
        (WebCore::WebCLDevice::getInfo):
        * Modules/webcl/WebCLDevice.h:
        * Modules/webcl/WebCLEvent.cpp:
        (WebCore::WebCLEvent::getInfo):
        (WebCore::WebCLEvent::getProfilingInfo):
        (WebCore::WebCLEvent::setCallback):
        (WebCore::WebCLEvent::processCallbackRegisterQueueForEvent):
        * Modules/webcl/WebCLEvent.h:
        * Modules/webcl/WebCLException.cpp:
        (WebCore::setExceptionFromComputeErrorCode):
        (WebCore::setExtensionsNotEnabledException):
        (WebCore::willThrowException):
        * Modules/webcl/WebCLException.h:
        * Modules/webcl/WebCLExtensionsAccessor.h:
        * Modules/webcl/WebCLHTMLInterop.cpp:
        (WebCore::WebCLHTMLInterop::extractDataFromCanvas):
        (WebCore::WebCLHTMLInterop::extractDataFromImage):
        (WebCore::WebCLHTMLInterop::extractDataFromImageData):
        * Modules/webcl/WebCLHTMLInterop.h:
        * Modules/webcl/WebCLImage.cpp:
        (WebCore::WebCLImage::create):
        (WebCore::WebCLImage::getGLTextureInfo):
        (WebCore::WebCLImage::getInfo):
        * Modules/webcl/WebCLImage.h:
        * Modules/webcl/WebCLKernel.cpp:
        (WebCore::WebCLKernel::create):
        (WebCore::WebCLKernel::createKernelsInProgram):
        (WebCore::WebCLKernel::getInfo):
        (WebCore::WebCLKernel::getWorkGroupInfo):
        (WebCore::WebCLKernel::setArg):
        (WebCore::WebCLKernel::getArgInfo):
        * Modules/webcl/WebCLKernel.h:
        * Modules/webcl/WebCLMemoryInitializer.cpp:
        (WebCore::WebCLMemoryInitializer::ensureMemoryInitialization):
        (WebCore::WebCLMemoryInitializer::commandQueueCreated):
        (WebCore::WebCLMemoryInitializer::bufferCreated):
        (WebCore::WebCLMemoryInitializer::processPendingMemoryInitializationList):
        (WebCore::WebCLMemoryInitializer::initializeOrQueueMemoryInitializationOfMemoryObject):
        * Modules/webcl/WebCLMemoryInitializer.h:
        * Modules/webcl/WebCLMemoryObject.cpp:
        (WebCore::WebCLMemoryObject::getInfo):
        (WebCore::WebCLMemoryObject::getGLObjectInfo):
        * Modules/webcl/WebCLMemoryObject.h:
        * Modules/webcl/WebCLObject.h:
        * Modules/webcl/WebCLPlatform.cpp:
        (WebCore::WebCLPlatform::getInfo):
        (WebCore::WebCLPlatform::getDevices):
        * Modules/webcl/WebCLPlatform.h:
        * Modules/webcl/WebCLProgram.cpp:
        (WebCore::WebCLProgram::create):
        (WebCore::WebCLProgram::getInfo):
        (WebCore::WebCLProgram::getBuildInfo):
        (WebCore::WebCLProgram::createKernel):
        (WebCore::WebCLProgram::createKernelsInProgram):
        (WebCore::WebCLProgram::build):
        (WebCore::WebCLProgram::ccDeviceListFromWebCLDeviceList):
        * Modules/webcl/WebCLProgram.h:
        * Modules/webcl/WebCLSampler.cpp:
        (WebCore::WebCLSampler::create):
        (WebCore::WebCLSampler::getInfo):
        * Modules/webcl/WebCLSampler.h:
        * Modules/webcl/WebCLUserEvent.cpp:
        (WebCore::WebCLUserEvent::create):
        (WebCore::WebCLUserEvent::setStatus):
        (WebCore::WebCLUserEvent::getInfo):
        * Modules/webcl/WebCLUserEvent.h: