Automated tests for the below commit have been missing.

This was a recent regression and a Stable blocker.Wondering whether there is a possibility of adding any tests to avoid regressions in future.

CL:
https://codereview.chromium.org/2651933002

Reference bug:
https://bugs.chromium.org/p/chromium/issues/detail?id=675372

Assigning to Sami for further updates.