GitLab

prints a message in diagnose_bloat.py to help users upload a oneoff for
sharing. Also updates the oneoff message in libsupersize/console.py to
use the new urls for the viewer.

Change-Id: I92d16460826488b4a55a9bb56d9200264ab0b476
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2485772
Commit-Queue: Mohamed Heikal <mheikal@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818879}