Apply .DEPS.git changes after 1985 branching point.

Upstream stopped updated .DEPS.git after branching, while DEPS does.
For eg:
http://src.chromium.org/viewvc/chrome/branches/1985/src/DEPS?view=log
http://src.chromium.org/viewvc/chrome/branches/1985/src/.DEPS.git?view=log

Keep this file update make it possible to use GIT instead of SVN for
those who suffer firewall issues.

Rebase owner is responsible to update the DEPS_git.diff