and deps2submodules.py.

Depends on https://codereview.chromium.org/11085027
Review URL: https://codereview.chromium.org/11090038

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@161305 0039d316-1c4b-4281-b951-d872f2087c98