DO NOT MERGE Fixing Connectivity

Passing Gateway addr info from telephony into ConnectivityService so it can
add/remove the default route as needed.  Fixed differently on master.

bug:2927822
Change-Id: I9a3ee7cd23c4717e7c60098f0595aa3f77c44b15

core/java/android/net/NetworkUtils.java

@@ -128,4 +128,19 @@ public class NetworkUtils {
                 |  (addrBytes[0] & 0xff);
         return addr;
     }
+
+    public static int v4StringToInt(String str) {
+        int result = 0;
+        String[] array = str.split("\\.");
+        if (array.length != 4) return 0;
+        try {
+            result = Integer.parseInt(array[3]);
+            result = (result << 8) + Integer.parseInt(array[2]);
+            result = (result << 8) + Integer.parseInt(array[1]);
+            result = (result << 8) + Integer.parseInt(array[0]);
+        } catch (NumberFormatException e) {
+            return 0;
+        }
+        return result;
+    }
 }