GitLab

Add web app info for Telemetry Extension and stop using deprecated
install URL for Telemetry Extension.

Fixed: 1120208
Change-Id: I5d71049a685930ff3f139af46c51e36e7e194a09
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2375351Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Reviewed-by: Jiewei Qian  <qjw@chromium.org>
Commit-Queue: Oleh Lamzin <lamzin@google.com>
Cr-Commit-Position: refs/heads/master@{#802176}