Promote chrome_sizes on bots out of experimental.

Got green runs on the three desktop bots:

And trybot mirrors are not polluting the perf dashboard's streams for the
CI bots since they upload to a different namespace based on master:

Bug: 961548
Change-Id: I9aae3c16eda8b2758e47a80f31a717c8c69f8772
Reviewed-by: Dirk Pranke <>
Reviewed-by: John Budorick <>
Commit-Queue: Ben Pastene <>
Cr-Commit-Position: refs/heads/master@{#672102}
2 files changed