Optionally schedule a delayed deletion of suggestions in sample keyboard am: 1bbbbac30e am: 14ce26727a am: 1263bb7e4f

Original change: https://googleplex-android-review.googlesource.com/c/platform/development/+/11921811

Change-Id: Iacbeaba70d2d89eaea922f9ed831f90fa0f3b13f