add libaom to libvpx watch list

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Change-Id: Ib12dc27749f3fee141c2367773effcd58a390530
Reviewed-on: https://chromium-review.googlesource.com/746026
Reviewed-by: James Zern <[email protected]>
Commit-Queue: Johann Koenig <[email protected]>
Cr-Commit-Position: refs/heads/master@{#513239}
1 file changed