CssRewriter rw = new CssRewriter(
null, CssSchema.getDefaultCss21Schema(mq), mq);
rw.rewrite(AncestorChain.instance(css));
CssDynamicExpressionRewriter rrw =
new CssDynamicExpressionRewriter(meta);
rrw.rewriteCss(css);
assertMessagesLessSevereThan(MessageLevel.ERROR);
styles.add(new ValidatedStylesheet(
new JobEnvelope(
null, JobCache.none(), ContentType.CSS, false, null),
css, is.getUri()));