Merge "Return frame period from vsynctracker." into tm-dev am: 4d035493 am:...

Merge "Return frame period from vsynctracker." into tm-dev am: 4d035493 am: fd275d2e am: 4ff178c5 am: 23cd3075

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/17699150



Change-Id: I5a113d7bc6388c12488edc078ce57d75d3429b00
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>