Merge "Migrate from android::String isEmpty to empty" into aosp-main-future am: dcf8afe1 am: 74ad2ac9 am: 4e8ed8f7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/24605487



Change-Id: I4b971a206499a74ccedc62f434106726a80583b7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>