Merge change 6283 into donut

* changes:
  Fix a bug where clicking the "more results" suggestion with the trackball did not seem to expand to show the corpus selectors. (http://b/1906643)

core/java/android/app/SearchDialog.java

@@ -1572,6 +1572,15 @@ public class SearchDialog extends Dialog implements OnItemClickListener, OnItemS
         protected void replaceText(CharSequence text) {
         }
         
+        /**
+         * We override this method to avoid an extra onItemClick being called on the
+         * drop-down's OnItemClickListener by {@link AutoCompleteTextView#onKeyUp(int, KeyEvent)}
+         * when an item is clicked with the trackball.
+         */
+        @Override
+        public void performCompletion() {
+        }
+        
         /**
          * We override this method so that we can allow a threshold of zero, which ACTV does not.
          */