Merge "Add check for empty vsync data in Choreographer." into tm-dev am:...

Merge "Add check for empty vsync data in Choreographer." into tm-dev am: c2c8ac85 am: c0b5c6cc am: 03782f43 am: 85e756ce

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17920025



Change-Id: I759934d0571f8ac9461d33625afcbd5b0e356c0a
Ignore-AOSP-First: this is an automerge
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>