Script to roll WebRTC in Chromium DEPS

Adding a pristine copy (only changed license and ownerless
TODOs) of the script we've used to roll the WebRTC revision
in Chromium DEPS.
This script assumes being located inside a Chromium checkout,
so a follow-up CL will be created for review of the required
changes for that before it can be used.

R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/47499004

Cr-Commit-Position: refs/heads/master@{#8675}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8675 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed