Introduce notouch_build flag, for devices without touch screens.

Bug: 933884
Change-Id: I596e3a3d59e93e8991a5740eb49b6355e5bbcd7a
Reviewed-on: https://chromium-review.googlesource.com/c/1489514
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Commit-Queue: Yaron Friedman <yfriedman@chromium.org>
Auto-Submit: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#635679}
1 file changed