[automerger skipped] Add CUJ constants for launching and saving App Pairs am: 145020e69d -s ours

am skip reason: Merged-In I6dfeea5ed39ae865e5bed82615a1e7968b2ce762 with SHA-1 ac5983820e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/26879962

Change-Id: I2bf2eced3ae887d5b1c47d304f99bb0a45876c06
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>