Improved comments for the recent optimization in owners.py
Improved comments for the recent optimization in owners.py

The final improvement of the patch, better comments, was never
included in the CL that got checked in. Here they are.

Bug: 920591
Change-Id: I2a5f7f67d4bbc5b40fdb0e7021795cd204d6f0c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1583772
Auto-Submit: Daniel Bratell <ba2a1cfc52df68b9fd0faeb952ec0afa917b114d@opera.com>
Reviewed-by: Dirk Pranke <6693ee08b084bb2ffa767f664c99b689395e0e4b@chromium.org>
Commit-Queue: Daniel Bratell <ba2a1cfc52df68b9fd0faeb952ec0afa917b114d@opera.com>

CoherentLabs/depot_tools,CoherentLabs/depot_tools