Merge "[sf] only update the last latch time if the layer has a buffer" into...

Merge "[sf] only update the last latch time if the layer has a buffer" into udc-dev am: ba87aa7f am: 5109e3af

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/21683988



Change-Id: I2339c90e62b72bb0adcb4a848bc37587bf9584f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>