Merge "Create IMPROVED_HUN_ANIMATIONS flag" into udc-dev am: 7631bf4a am: 8a0e7cef

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23284680



Change-Id: Ib5c3ce677dd6dc79aa18e3dec4959419d2349c1e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>