Make git try work over svn.
Make git try work over svn.

Codereview URL: http://codereview.appspot.com/110134


git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@25111 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

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