Merge "Drop String::empty()" into main am: 47fc3df9a0 am: 68c2432f77 am: 17379e4315 am: b23651d7f5 am: 8a48459fa4

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2707114

Change-Id: Ife09f75ec0b29efb9526345a42b783056a6b4be1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>