Merge "Add jank instrument support for split screen" into tm-dev am: 8edc0dfc am: 0e5421b4

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17818645



Change-Id: I7bbd34aa8b2f90c103cceb762e0a2efc4f233963
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>