[infra] Run presubmit like a normal bot

Bug: skia:
Change-Id: If01c10c21477bd61c4ec1d4f59921745eb3bf494
Reviewed-on: https://skia-review.googlesource.com/123622
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
4 files changed