Merge "Add feature flag to FeatureFlagUtils." into udc-qpr-dev am: ddb303bb31

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24500502

Change-Id: I6376299f02ceab42a9925f56e18cc8f878dae80a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>