Add a Dummy data connection for testing purposes.

Enable with:
    <string-array translatable="false" name="networkAttributes">
        <item>"wifi,1,1,1"</item>
        <item>"dummy,7,7,0"</item>
    </string-array>

in your config.xml

Change-Id: I3965edaeb4873e95131f4083b8d23d682ce17841
diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index f1fce3e..758f9f3 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -24,6 +24,7 @@
 import android.content.pm.PackageManager;
 import android.database.ContentObserver;
 import android.net.ConnectivityManager;
+import android.net.DummyDataStateTracker;
 import android.net.IConnectivityManager;
 import android.net.MobileDataStateTracker;
 import android.net.NetworkInfo;
@@ -411,6 +412,11 @@
                     mNetTrackers[netType].teardown();
                 }
                 break;
+            case ConnectivityManager.TYPE_DUMMY:
+                mNetTrackers[netType] = new DummyDataStateTracker(netType,
+                        mNetAttributes[netType].mName);
+                mNetTrackers[netType].startMonitoring(context, mHandler);
+                break;
             default:
                 loge("Trying to create a DataStateTracker for an unknown radio type " +
                         mNetAttributes[netType].mRadio);