Refactor MobileNetworkSettings to use fragment framework.

Bug: 35157859
Test: UI change only.
Change-Id: Ib0d471803904d73f1621fc0c049554f00b732c16
diff --git a/src/com/android/phone/PhoneSearchIndexablesProvider.java b/src/com/android/phone/PhoneSearchIndexablesProvider.java
index f1dacd9..85ea653 100644
--- a/src/com/android/phone/PhoneSearchIndexablesProvider.java
+++ b/src/com/android/phone/PhoneSearchIndexablesProvider.java
@@ -37,7 +37,7 @@
     private static final String TAG = "PhoneSearchIndexablesProvider";
 
     private static SearchIndexableResource[] INDEXABLE_RES = new SearchIndexableResource[] {
-            new SearchIndexableResource(1, R.xml.network_setting,
+            new SearchIndexableResource(1, R.xml.network_setting_fragment,
                     MobileNetworkSettings.class.getName(),
                     R.mipmap.ic_launcher_phone),
     };