GitLab

I chatted with Shiba and Sebastian about this after looking at
screenshots of Android Messages inline reply. It seems like
600 is the right match with the MD2 spec.

R=stevenjb@chromium.org

Bug: None
Change-Id: I2e66180eb752049abf19452fd02cbe103cb516a4
Reviewed-on: https://chromium-review.googlesource.com/1185843Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Jeremy Klein <jlklein@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585280}