Merge "Fix low contrast text in add user dialog." into udc-dev am: 59ecd6a4 am: 81920e0b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23450544



Change-Id: I7f75a8cb5c2e227d4503d8acf4b74e53385275a6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>