Add support for USB Ethernet adapters

Change-Id: I6ae34a32d0e1b6f21c484b8639c3e7ce086e568d
diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index fcb4c23..b1552a8 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -24,6 +24,7 @@
 import android.database.ContentObserver;
 import android.net.ConnectivityManager;
 import android.net.DummyDataStateTracker;
+import android.net.EthernetDataTracker;
 import android.net.IConnectivityManager;
 import android.net.LinkProperties;
 import android.net.MobileDataStateTracker;
@@ -420,6 +421,10 @@
                 mNetTrackers[netType] = BluetoothTetheringDataTracker.getInstance();
                 mNetTrackers[netType].startMonitoring(context, mHandler);
                 break;
+            case ConnectivityManager.TYPE_ETHERNET:
+                mNetTrackers[netType] = EthernetDataTracker.getInstance();
+                mNetTrackers[netType].startMonitoring(context, mHandler);
+                break;
             default:
                 loge("Trying to create a DataStateTracker for an unknown radio type " +
                         mNetAttributes[netType].mRadio);