Create default implementation for getSyncTarget

AttachedSurfaceControl is a public API so hidden APIs need to be
implemented. Create a default implementation for a new hidden API to
ensure backwards compatibility.

Test: testRuntimeCompatibilityWithCurrentApi_android_net_ipsec_ike
Fixes: 240300753
Change-Id: I4aec403e4bc13e2db902a291f1e42d8fe3d8fdf3
2 files changed