Add LauncherCallbacks method to add additional search widget options.

Bug: 25000458
Change-Id: I5e8d48617568569bc6e4f284749c3ed9fb20a68f
diff --git a/src/com/android/launcher3/LauncherCallbacks.java b/src/com/android/launcher3/LauncherCallbacks.java
index 927db22..f27ed1d 100644
--- a/src/com/android/launcher3/LauncherCallbacks.java
+++ b/src/com/android/launcher3/LauncherCallbacks.java
@@ -83,6 +83,7 @@
     public boolean hasCustomContentToLeft();
     public void populateCustomContentContainer();
     public View getQsbBar();
+    public Bundle getAdditionalSearchWidgetOptions();
 
     /*
      * Extensions points for adding / replacing some other aspects of the Launcher experience.