GitLab

Two main changes to address flakiness:
  1. Scroll to nickname before changing it.
  2. Use grey_replaceText as recommended by EG.

Evolved from previous CL
https://chromium-review.googlesource.com/c/chromium/src/+/2380145

Fixed: 1106766, 1108809
Change-Id: I0acfc0980b95bc657d545c43d1a7e15410485747
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2493423
Commit-Queue: Alfonso Garza <alfonsogarza@google.com>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Reviewed-by: Jared Saul <jsaul@google.com>
Cr-Commit-Position: refs/heads/master@{#828014}