Make copies of NetworkInfo to give out.

Otherwise we'll change it out from under those we've given it too.
bug:5233462

Change-Id: Iffc886849edfa6ced3da1133f9d363e11b2733f8

core/java/android/net/NetworkInfo.java

@@ -138,6 +138,23 @@ public class NetworkInfo implements Parcelable {
         mIsRoaming = false;
     }
 
+    /** {@hide} */
+    public NetworkInfo(NetworkInfo source) {
+        if (source != null) {
+            mNetworkType = source.mNetworkType;
+            mSubtype = source.mSubtype;
+            mTypeName = source.mTypeName;
+            mSubtypeName = source.mSubtypeName;
+            mState = source.mState;
+            mDetailedState = source.mDetailedState;
+            mReason = source.mReason;
+            mExtraInfo = source.mExtraInfo;
+            mIsFailover = source.mIsFailover;
+            mIsRoaming = source.mIsRoaming;
+            mIsAvailable = source.mIsAvailable;
+        }
+    }
+
     /**
      * Reports the type of network (currently mobile or Wi-Fi) to which the
      * info in this object pertains.