GitLab

1) Change style to match style guide.
2) Use "git svn info" so we can use the same parsing code for
   both git and svn.

TEST=ran manually

Review URL: http://codereview.chromium.org/6263009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72074 0039d316-1c4b-4281-b951-d872f2087c98