Showing recents in search

A list of recent queries will display when search first launches, or
when text query is empty.

Fix: 32452066
Test: make RunSettingsRoboTests
Change-Id: Ic697f8c0795f2315a01406537c7ce1bbf9a813be

src/com/android/settings/search2/SearchFeatureProvider.java

@@ -47,6 +47,11 @@ public interface SearchFeatureProvider {
      */
     InstalledAppResultLoader getInstalledAppSearchLoader(Context context, String query);
 
+    /**
+     * Returns a new loader to get all recently saved queries search terms.
+     */
+    SavedQueryLoader getSavedQueryLoader(Context context);
+
     /**
      * Returns the manager for indexing Settings data.
      */