libbinder: RPC binder - incl. protocol version

Bug: 182938972
Test: binderRpcTest
Change-Id: I135fa44b111d92b53161775dea90a42e4cb5bee1
diff --git a/libs/binder/RpcState.h b/libs/binder/RpcState.h
index 5ac0b97..1446eec 100644
--- a/libs/binder/RpcState.h
+++ b/libs/binder/RpcState.h
@@ -60,6 +60,8 @@
     RpcState();
     ~RpcState();
 
+    status_t readNewSessionResponse(const sp<RpcSession::RpcConnection>& connection,
+                                    const sp<RpcSession>& session, uint32_t* version);
     status_t sendConnectionInit(const sp<RpcSession::RpcConnection>& connection,
                                 const sp<RpcSession>& session);
     status_t readConnectionInit(const sp<RpcSession::RpcConnection>& connection,