GsmServiceStateTracker#getPhone should be protected not public.

Change-Id: Ie8c1ac0a38616e4794aa51b9b642d9b22008b9ff

telephony/java/com/android/internal/telephony/gsm/GsmServiceStateTracker.java

@@ -251,7 +251,7 @@ final class GsmServiceStateTracker extends ServiceStateTracker {
     }
 
     @Override
-    public Phone getPhone() {
+    protected Phone getPhone() {
         return phone;
     }