Build slice from indexed data in SliceProvider

Connect the SliceIndexing data to the SliceProvider,
such that a query to SliceProvider can build a Slice
via the indexed data from SlicesIndexingManager.

We take the key from the Uri supplied to the SettingSliceProvider
and find a potential matching row in the indexed data. The
matched data is then used to Build a slice for the caller.

Bug: 67996923
Test: robotests
Change-Id: If51bfd1a05c3f3817ae720554f95a98fc7b002e1

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

@@ -13,5 +13,15 @@ public interface SlicesFeatureProvider {
 
     SliceDataConverter getSliceDataConverter(Context context);
 
+    /**
+     * Asynchronous call to index the data used to build Slices.
+     * If the data is already indexed, the data will not change.
+     */
+    void indexSliceDataAsync(Context context);
+
+    /**
+     * Indexes the data used to build Slices.
+     * If the data is already indexed, the data will not change.
+     */
     void indexSliceData(Context context);
 }