Clean up some Ozone build files not to assume use of evdev.

Bug: 808287
Change-Id: Ic699462759818049666babb0587939e4ca687643
Reviewed-on: https://chromium-review.googlesource.com/1167555
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582421}
5 files changed