Merge "Clear snapshot buffer preemptively if unused" into tm-dev am:...

Merge "Clear snapshot buffer preemptively if unused" into tm-dev am: 87b7e43b am: 1945aedc am: 53f70e14

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18800614



Change-Id: Iec423103519e8ea48939a5bee6a078b30f772575
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>