Protect system services with DUMP permission.

Change-Id: I5e53859f8b8e5473e54eca43ebd7de841f1a05ff
diff --git a/services/java/com/android/server/CountryDetectorService.java b/services/java/com/android/server/CountryDetectorService.java
index 3112b50..fc76277 100644
--- a/services/java/com/android/server/CountryDetectorService.java
+++ b/services/java/com/android/server/CountryDetectorService.java
@@ -212,6 +212,8 @@
     @SuppressWarnings("unused")
     @Override
     protected void dump(FileDescriptor fd, PrintWriter fout, String[] args) {
+        mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DUMP, TAG);
+
         if (!DEBUG) return;
         try {
             final Printer p = new PrintWriterPrinter(fout);