Merge "Load back-gesture model on background thread." into tm-qpr-dev am: fddc399c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19440790



Change-Id: I43e31a0a916b35483c387789c1c23606978255f0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>