tree f89f3e4203411225685086b8a1fa50f5c7824e3d
parent 327d72b88b3e49386aaf46132a197b7375898ccb
author sbc@chromium.org <sbc@chromium.org> 1429734094 +0000
committer sbc@chromium.org <sbc@chromium.org> 1429734094 +0000

Improve --help and usage message for roll_deps.py

Also, don't use assert for user error handling plus
some other general python cleanup.

NOPRESUBMIT=true (presubmit is broken)

Review URL: https://codereview.chromium.org/1091603002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@294950 0039d316-1c4b-4281-b951-d872f2087c98