Licensing fixups This moves COPYING to LICENSE and adds OWNERS as per the "Licensing for ChromeOS contributors" doc. BUG=none BRANCH=none TEST=none Change-Id: I880c220f3e177e32fa793ec0eabc273877eecca5 Reviewed-on: https://chromium-review.googlesource.com/190066 Commit-Queue: David Hendricks <[email protected]> Tested-by: David Hendricks <[email protected]> Reviewed-by: Duncan Laurie <[email protected]>