Merge "Enable interacting with caption through status bar." into tm-qpr-dev am: d1aa46cea9 am: 8401d17449

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20407068

Change-Id: I34355362977c930ea4f5fc717a59579efbe40993
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>