Remove dependencies on Kiosk Next internal src.

Bug: 977019
Change-Id: Ie798b541d1a0138c4ebef2f5a27adad23839b214
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1672828
Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Bruno Santos <brunoad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672060}
12 files changed