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This will allow lacros to synchronously determine ash's version. This
allows Lacros to avoid using unsupported APIs.

Bug: 1130810
Change-Id: I57fb355861b70b082499e123606f97366e0c3670
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2423203Reviewed-by: Greg Kerr <kerrnel@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Commit-Queue: Erik Chen <erikchen@chromium.org>
Auto-Submit: Erik Chen <erikchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809533}