Write commit position as a comment in Chromium DEPS.

This will make it easier to track which revision is
in a certain Chrome release, since you don't have to
look up the Git hash every time.

Also rename svn_revision to commit_position to make
it more clear what the number is in the post-SVN era.

TESTED=tools/autoroller/roll_webrtc_in_chromium.py --chromium-checkout /ssd/chrome/src --verbose --ignore-checks --dry-run --close-previous-roll
and verified in the modified DEPS file that the comment was set.

R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/49439004

Cr-Commit-Position: refs/heads/master@{#8756}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8756 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed