Good thought 
If you didn't configure one, your router may have come preconfigured with nyroc.rr.com as local domain, if provided by your ISP, or your ISP may have remotely configured such a local domain (could nyroc stand for Rochester, NY?).
That would at least explain these requests, if not the long resolution times (Chromium probes resolve in about 5 ms on my network) and the perceived frequency of occurence in your logs. The latter may be purely coincidental, but so far, all your log excerpts do show these requests.
Do you see these requests even when your Chrome browser is not running?
Can you confirm observing these triple requests multiple times when running Chrome, even some time after starting up Chrome?
Could there be something causing Chromium to restart repeatedly on your machine?
Chromium (Chrome's open source core engine) may be used as render enginge by non-browser programs as well, e.g. some mail clients will use Chromium to render HTML mails.
If the answer to the above is always No, we can put aside these requests as reason for your delays.