Merge "Port appsearch-service to the system_server_current sdk." into sc-dev am: e665d39f am: 9e2d4748

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14638445

Change-Id: I622d8b085c31dd399a12ce2f37e96547b4071b10