Fix docs build breakage

     * @param canvas a hardware accelerated canvas (see {@link Canvas#isHardwareAccelerated()})

     * @param nativeDrawGLFunctor the pointer to the native functor that implements

     *        system/core/include/utils/Functor.h

     * @throw IllegalArgumentException if the canvas is not hardware accelerated

     * @throws IllegalArgumentException if the canvas is not hardware accelerated

     */

    public void callDrawGlFunction(Canvas canvas, long nativeDrawGLFunctor) {

        if (!(canvas instanceof HardwareCanvas)) {