GitLab

The previous change (r581945) to update version string used by
ChromeDriver in release branches didn't work, because the top-most
commit doesn't have the necessary branch info. This CL adds the same
commit filter used to generate the version string shown by Chrome.

Bug: chromedriver:2080
Change-Id: I4d7b57a139968d3e5e0f1ebad26d6ed648ab5d72
Reviewed-on: https://chromium-review.googlesource.com/1171843Reviewed-by: Caleb Rouleau <crouleau@chromium.org>
Commit-Queue: John Chen <johnchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582404}