git cl format --python PRESUBMIT.py and PRESUBMIT_test.py

Skipping the presubmit, because ironically enough, PRESUBMIT.py and
PRESUBMIT_test.py trigger a number of pre-existing presubmit violations.

No-Presubmit: true
Change-Id: I9aabeb8496a0582d6cb92af90db4ef3b32f70b04
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5668998
Reviewed-by: Steinar H Gunderson <[email protected]>
Commit-Queue: Daniel Cheng <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1321358}