Merge "Split predictive back bitmask flags into a few boolean flags." into tm-dev am: f608b183

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17491587



Change-Id: I4de647ff0edf6b13ca7a126e4a1c2f6939a4bceb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>