Send availability info more reliably

We don't have a monolithic availability state, so the mAvailable variable
must go.

bug:5453318
Change-Id: I82af90907cc7a0173b74d661912f9c28ddc7dcb0

core/java/android/net/MobileDataStateTracker.java

@@ -197,7 +197,10 @@ public class MobileDataStateTracker implements NetworkStateTracker {
                 String apnName = intent.getStringExtra(Phone.DATA_APN_KEY);
                 mNetworkInfo.setRoaming(intent.getBooleanExtra(Phone.DATA_NETWORK_ROAMING_KEY,
                         false));
-
+                if (VDBG) {
+                    log(mApnType + " setting isAvailable to " +
+                            intent.getBooleanExtra(Phone.NETWORK_UNAVAILABLE_KEY,false));
+                }
                 mNetworkInfo.setIsAvailable(!intent.getBooleanExtra(Phone.NETWORK_UNAVAILABLE_KEY,
                         false));
 

core/java/android/net/NetworkStateTracker.java

@@ -132,6 +132,9 @@ public interface NetworkStateTracker {
      * Returns an indication of whether this network is available for
      * connections. A value of {@code false} means that some quasi-permanent
      * condition prevents connectivity to this network.
+     *
+     * NOTE that this is broken on multi-connection devices.  Should be fixed in J release
+     * TODO - fix on multi-pdp devices
      */
     public boolean isAvailable();