Swap order of checking Unity and Identity Disc experiment flags

Must check dominant flag first otherwise Finch would elect users into
Identity Disc group unnecessarily.

Bug: 965974
Change-Id: Ib2669a1c47940b504d3c4f0e02a448727502ce88
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1628653
Auto-Submit: Peter Lee <pkl@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Commit-Queue: Peter Lee <pkl@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663119}
1 file changed