Add a new column for slices_index table.

To distinguish public and non-public slices, add public_slice column
to the database so we can return corresponding results based on this
value.

Bug: 141088937
Test: robotests
Change-Id: I05d003875a8be27e5cb735b4814eb86d6dc40174

src/com/android/settings/slices/SlicesIndexer.java

@@ -112,6 +112,7 @@ class SlicesIndexer implements Runnable {
             values.put(IndexColumns.SLICE_TYPE, dataRow.getSliceType());
             values.put(IndexColumns.UNAVAILABLE_SLICE_SUBTITLE,
                     dataRow.getUnavailableSliceSubtitle());
+            values.put(IndexColumns.PUBLIC_SLICE, dataRow.isPublicSlice());
 
             database.replaceOrThrow(Tables.TABLE_SLICES_INDEX, null /* nullColumnHack */,
                     values);