Define guest state accessor interface am: 797e55fe46

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/native_bridge_support/+/2953662

Change-Id: I1962e75ebd6126700995c313a5e4553dd3cc09dd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>