Add newline to git-new-branch output.
Add newline to git-new-branch output.

R=iannucci@chromium.org, pgervais@chromium.org

Review URL: https://codereview.chromium.org/261843002

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@267616 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

svn2github/chromium-depot-tools,svn2github/chromium-depot-tools,svn2github/chromium-depot-tools