Add CombinedMessageQueue#mNextBarrierToken

CombinedMessageQueue needs to preserve all @UnsupposedAppUsage fields from LegacyMessageQueue.

Bug: 376573804
Change-Id: I214b9fb53f3bdd875fe4a046b5764916ac805b56
Flag: build.RELEASE_PACKAGE_MESSAGEQUEUE_IMPLEMENTATION
1 file changed