commit 66d78b549ccf352cdcbba5f2556c75ecf70f647e
author Robert Ma <robertma@chromium.org> Thu Jun 20 18:36:08 2019
committer Commit Bot <commit-bot@chromium.org> Thu Jun 20 18:36:08 2019
tree 9f37d7c1dc04052ff909cafd8ea6944657f98a4e
parent 44e5beb8486f0447640b032a5ae1762050e77f02

[blinkpy] Always force push branches to WPT upstream

We used to only force push when we are updating an existing PR, because
we didn't want to accidentally overwrite other people's branches. We are
now switching to always force push because:

1. The naming convention "chromimum-export-*" is now very well known and
   it's unlikely that other people will name their branches this way.
2. There is a failure mode that requires force push: if an export is
   interrupted in the middle, after the branch is created but before the
   PR is created, the next export would fail to push unless without
   --force.

Change-Id: I2d1b4faa96acaff355fd55b8531f2ebbb9c8e0c9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1669809
Auto-Submit: Robert Ma <robertma@chromium.org>
Commit-Queue: Luke Z <lpz@chromium.org>
Reviewed-by: Luke Z <lpz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#670975}