createImageData   201 Source/core/html/canvas/CanvasRenderingContext2D.h     PassRefPtrWillBeRawPtr<ImageData> createImageData(PassRefPtrWillBeRawPtr<ImageData>, ExceptionState&) const;
createImageData   202 Source/core/html/canvas/CanvasRenderingContext2D.h     PassRefPtrWillBeRawPtr<ImageData> createImageData(float width, float height, ExceptionState&) const;