Merge "Don't trigger full relayout if DateTimeView doesn't change" into tm-dev...

Merge "Don't trigger full relayout if DateTimeView doesn't change" into tm-dev am: 06ac74c5 am: 6ff0c89e am: 6d7ef5ec

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17606881



Change-Id: I3727fcfab0617cc993f2cd651a86851ff4c1c7a9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>