Merge "[pm] describe warning dialog behavior in javadoc" into udc-dev am:...

Merge "[pm] describe warning dialog behavior in javadoc" into udc-dev am: 416dd2e5 am: 50f4d8fe am: da7f9042

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23438327



Change-Id: I7e2654bda629480ee580d380406045c6cbc8ee0e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>