Change getBadgedLabelForUser to use CharSequence

Bug: 16401636
Change-Id: I7b72a6dd53fec1c0afe6ea33803af9e3c54e597e
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index a5ca298..2d6ddee 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -4720,7 +4720,7 @@
     public ItemInfo createShortcutDragInfo(Intent shortcutIntent, CharSequence caption,
             Bitmap icon, UserHandleCompat user) {
         UserManagerCompat userManager = UserManagerCompat.getInstance(this);
-        String contentDescription = userManager.getBadgedLabelForUser(caption.toString(), user);
+        CharSequence contentDescription = userManager.getBadgedLabelForUser(caption, user);
         return new ShortcutInfo(shortcutIntent, caption, contentDescription, icon, user);
     }