The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9cfb56c42745c5bec047ea9473e5ae6d6aaf7719

commit 9cfb56c42745c5bec047ea9473e5ae6d6aaf7719
Author: Moe Ahmadi <mahmadi@chromium.org>
Date: Fri May 18 18:44:08 2018

[AF] Can't query when CC save infobar isn't shown due to bad legal message

enums.xml entry is missing for the following:
AutofillMetrics::INFOBAR_NOT_SHOWN_INVALID_LEGAL_MESSAGE

This affects mobile only

Bug:  844509 
Change-Id: Ie37937afcee889b22ea03b6c6f3ae35dada7d390
Reviewed-on: https://chromium-review.googlesource.com/1066188
Reviewed-by: Jared Saul <jsaul@google.com>
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559971}
[modify] https://crrev.com/9cfb56c42745c5bec047ea9473e5ae6d6aaf7719/tools/metrics/histograms/enums.xml