Merge "Update bouncer delay (behind flag) from 250ms -> 500ms" into udc-dev am: 2c1e760d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23086559



Change-Id: I0b15e2d83f81bab7b4ae8d9a22ad80bc6c4ac87e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>