Merge "Check task switch by comparing leaf task." into tm-dev am: f55e3645...

Merge "Check task switch by comparing leaf task." into tm-dev am: f55e3645 am: d92bc73b am: 25a2e194

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18425963



Change-Id: Iadc0b4076e2d848a701c2347fbc6d61b00ab57c2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>