Make depot_tools upload reviews to Gerrit by default
Make depot_tools upload reviews to Gerrit by default

BUG=634946

Change-Id: I1724395d6ba223854e513543841bdbb317f3ede7
Reviewed-on: https://chromium-review.googlesource.com/410227
Reviewed-by: Andrew Bonventre <682ad9f487f614f19e8b7cc5d340bdc8e1c1b128@chromium.org>
Commit-Queue: Aaron Gable <bbed39beedae4cdb499af742d2fcd6c63934d93b@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools