moz-skia/trybots_to_run/chrome

This directory contains a few sets of chrome trybots that are appropriate to run in various circumstances.
See:
 - https://sites.google.com/site/skiadocs/developer-documentation/managing-chrome-s-use-of-skia/how-to-run-skia-changes-through-chrome-trybots
 - https://sites.google.com/site/skiadocs/developer-documentation/managing-chrome-s-use-of-skia/how-to-roll-skia-deps-within-the-chrome-repo-skia-gardening
 - http://build.chromium.org/p/tryserver.chromium/waterfall

depsroll: these are the trybots we should run before committing a Skia DEPS roll into Chrome
layout: a smaller set to exercise most layout tests