GitLab

It's duplicative with input validation messaging and this was requested
by designer bettes@ during a polish pass.

Bug: 787227
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I1e9f3267b8a62f886ebb0b6ff93d59f6d1006aa2
Reviewed-on: https://chromium-review.googlesource.com/786398
Commit-Queue: Dan Beam (no longer on Chrome) <dbeam@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519585}