StyleTagProxyEmbeddedUrlsVisitorTest.testImportsAndBackgroundUrlsInStyleTag() is incorrect. According the W3C CSS2 spec http://www.w3.org/TR/CSS2/syndata.html#at-rules: CSS 2.1 user agents must ignore any '@import' rule that occurs inside a block or after any non-ignored statement other than an @charset or an @import rule.
I've changed the test case to test what I assume was intended to be tested (an unignored @import), synced and submitted. (Incidentally the submission was made while at 10969m and traveling at the speed of at 822km/h. Is this a contender for the Shindig patch made at the greatest height and speed? :) ) http://codereview.appspot.com/1852041/show