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/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index 9c04e8c..f741c2b 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -1006,6 +1006,13 @@
      */
     public static final int FIREWALL_CHAIN_OEM_DENY_2 = 8;
 
+    /**
+     * Firewall chain used for OEM-specific application restrictions.
+     * Denylist of apps that will not have network access due to OEM-specific restrictions.
+     * @hide
+     */
+    public static final int FIREWALL_CHAIN_OEM_DENY_3 = 9;
+
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
     @IntDef(flag = false, prefix = "FIREWALL_CHAIN_", value = {
@@ -1016,7 +1023,8 @@
         FIREWALL_CHAIN_LOW_POWER_STANDBY,
         FIREWALL_CHAIN_LOCKDOWN_VPN,
         FIREWALL_CHAIN_OEM_DENY_1,
-        FIREWALL_CHAIN_OEM_DENY_2
+        FIREWALL_CHAIN_OEM_DENY_2,
+        FIREWALL_CHAIN_OEM_DENY_3
     })
     public @interface FirewallChain {}
     // LINT.ThenChange(packages/modules/Connectivity/service/native/include/Common.h)