Add a fetch recipe for infra_internal.
Add a fetch recipe for infra_internal.

Although many things are private, the urls of the infra_internal and
build_internal repositories are not. So let's just add a fetch recipe
for them anyway.

R=iannucci@chromium.org

Review URL: https://codereview.chromium.org/544863006

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@292586 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

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