Handle "N seconds ago" instead of dying

Test have been failing a "1 second ago" test for months, e.g.
https://wmf.ci.cloudbees.com/view/flow/job/Flow-en.wikipedia.beta.wmflabs.org-linux-chrome/316/testReport/

Bug: 61582
Change-Id: I0cc30692e739a7a851cfee865c48ee25078ecc10
Merge "Handle "N seconds ago" instead of dying"