Merge "Set FLAG_DIM_BEHIND for Bidics Prompt window" into tm-qpr-dev am: 0641bef2 am: e5445bb4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19194825



Change-Id: Id5282e1b5dd37b46238b7b21bb2516984d9a4305
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>