Experimental run, just for getting data from RuntimeCallstats bots.

To be reverted soon - expected to break various things.

BUG=v8:5516
NOTREECHECKS=true

Change-Id: I6d235fddee36b0f0efe70065166d25ed40d6e163
Reviewed-on: https://chromium-review.googlesource.com/557863
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47248}