Merge "Migrate from android::String isEmpty to empty [process]" into main am: 846d6a30bc

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2707679

Change-Id: I6100ea63d70d462264d84be15439b3c9cd08113f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>