Clang update.py: Add --package option

and use that to download auxiliary packages, removing the custom scripts
previously used to do that.

Bug: 884608
Change-Id: Iefcd2145898588a6dbdc14c21841201f9d17f8c0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1605911
Commit-Queue: Hans Wennborg <hans@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#712644}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 8ee64a1ef7f2c6cc1361415b4aecac32311d4a28
2 files changed