Show typeahead hint for app results

Preview: https://drive.google.com/file/d/1_qB-HDVfqqzPOhnuq5Hj9grhh69av7xf/view

Bug: 180545101
Test: Manual
Change-Id: I0649fa0e19f850fdc4de3776f6ac9f450bb0501b
diff --git a/src/com/android/launcher3/allapps/SearchUiManager.java b/src/com/android/launcher3/allapps/SearchUiManager.java
index f926086..39410a7 100644
--- a/src/com/android/launcher3/allapps/SearchUiManager.java
+++ b/src/com/android/launcher3/allapps/SearchUiManager.java
@@ -61,7 +61,8 @@
     /**
      * Called when activity is destroyed. Used to close search system services
      */
-    default void destroy(){}
+    default void destroy() {
+    }
 
     /**
      * Returns true if the QSB should be visible for the given set of visible elements
@@ -75,4 +76,9 @@
      */
     @Nullable
     EditText getEditText();
+
+    /**
+     * sets highlight result's title
+     */
+    default void setFocusedResultTitle(@Nullable  CharSequence title) { }
 }