[automerger skipped] Migrate from android::String isEmpty to empty am: 8a0e352880 -s ours am: 16c5cd89ff -s ours am: 398953b9de -s ours

am skip reason: Merged-In Id74502de0e51182aa9629db8dc70739be4483d12 with SHA-1 a7a9988734 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2705934

Change-Id: Ie55f76a9d8ac072a6cc75fe86b7279af7b610806
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>