Update CHROMEOS_LKGM to 9972.0.0

Bug: 762641
Change-Id: I2b65e46485b4ae8e2ff620732870c27b24abdaaa
Reviewed-on: https://chromium-review.googlesource.com/682106
Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504091}
1 file changed