GitLab

* Remove oobe-dialog-host-{height,width} vars. We don't actually use the
vars. This would reduce dependency on OOBE
* Make discover app occupy 100% of the dialog


Bug: 1019857
Change-Id: I58bba1ff78cfa7fe4494f317590aac2d635c3f6c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893267Reviewed-by: Denis Kuznetsov [CET] <antrim@chromium.org>
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Commit-Queue: Roman Sorokin [CET] <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712071}