I've noticed the same thing re: Chrome not caring about subresources. Eg, we use Mixpanel, and mixpanel uses Akamai, and Akamai use CBC which is considered obsolete, but that doesn't trigger an 'outdated' warning.
I asked David Benjamin from Chrome and right now, sub resources aren't included in Chrome warnings (he thinks they should be though):
I asked David Benjamin from Chrome and right now, sub resources aren't included in Chrome warnings (he thinks they should be though):
https://twitter.com/mikemaccana/status/597734101366476800