Add 3rd deny firewall chain for OEM

Bug: 208371987
Test: atest
CtsNetTestCases:android.net.cts.ConnectivityManagerTest#testFirewallBlocking
ConnectivityServiceTest

Change-Id: Ib521fa02f6a19270cb88a3d85321bda822516c78
diff --git a/service/native/include/TrafficController.h b/service/native/include/TrafficController.h
index 7a36e1e..c019ce7 100644
--- a/service/native/include/TrafficController.h
+++ b/service/native/include/TrafficController.h
@@ -90,6 +90,7 @@
     static const char* LOCAL_LOW_POWER_STANDBY;
     static const char* LOCAL_OEM_DENY_1;
     static const char* LOCAL_OEM_DENY_2;
+    static const char* LOCAL_OEM_DENY_3;
 
   private:
     /*