Now that almost everything is being run under swarming, we should get rid of the (mostly) redundant package_build / extract_build steps on the waterfall builders that have builder/tester splits, and instead just upload a list of swarming tasks to run (isolate hashes + command lines + metadata for steps) and download them on the testers.
This is currently done and working on the internal ios bots, so porting this over should be conceptually straightforward.
In order for that to be possible, we need to make sure that in fact *all* of the desired tests are swarmed. Most notable, we can't do this on bots that run layout tests until they are swarmed :(.
Any volunteers to work on this?
Comment 1 by dpranke@chromium.org
, Aug 10 2017