[automerger skipped] InputFlinger: Add DROP_INPUT feature flags am: 0f13fe552d am: f86cec5a48 -s ours

am skip reason: Merged-In I71d7cf5064c8ce4626cff09b92e15ca38b39cbbe with SHA-1 212dcf44f6 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/16508593

Change-Id: Id263840eac339bb7decfd556092cc8a0efb7eae4