Allow partial Index rebuilding thru updateFromClassNameResource(...)

- add a new boolean parameter to ask for Index rebuilding:
passing "true" will delete first all the data corresponding to the
"className" and then apply the update.

Change-Id: Ifc42fc560a14f5470b466cf6982915d9207fa3c7

src/com/android/settings/bluetooth/BluetoothEnabler.java

@@ -166,6 +166,6 @@ public final class BluetoothEnabler implements CompoundButton.OnCheckedChangeLis
 
     private void updateSearchIndex(boolean isBluetoothOn) {
         Index.getInstance(mContext).updateFromClassNameResource(
-                BluetoothSettings.class.getName(), isBluetoothOn);
+                BluetoothSettings.class.getName(), false, isBluetoothOn);
     }
 }