Add 3rd deny firewall chain for OEM

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

Change-Id: Ib521fa02f6a19270cb88a3d85321bda822516c78
(cherry picked from commit 1d9054ba5fbbf86c821e0a74a5a2f9d3c9865e67)
Merged-In: Ib521fa02f6a19270cb88a3d85321bda822516c78
diff --git a/service/native/include/Common.h b/service/native/include/Common.h
index 48f68ea..2427aa9 100644
--- a/service/native/include/Common.h
+++ b/service/native/include/Common.h
@@ -38,6 +38,7 @@
     LOCKDOWN = 6,
     OEM_DENY_1 = 7,
     OEM_DENY_2 = 8,
+    OEM_DENY_3 = 9,
     INVALID_CHAIN
 };
 // LINT.ThenChange(packages/modules/Connectivity/framework/src/android/net/ConnectivityManager.java)