Merge "Letterbox status bar treatment - Remove dev feature flag" into tm-qpr-dev am: f001142e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19951605



Change-Id: Ic154122d1e7ad4f93096ae90a5d3aadd36c92e77
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>