Merge "Tv PiP: allow launcher to identify custom actions." into udc-dev am: f14d97df2c am: f92cc175b5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22335689

Change-Id: I95c9faeb3cdc574b1967b056780d291818bd0e37
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>