Regression: r170111 Tapping listbox items should fire change/input event

Source/core/html/HTMLSelectElement.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
@@ skipping 1389 matching lines @@
     if (event->type() == EventTypeNames::gesturetap && event->isGestureEvent()) {
         focus();
         // Calling focus() may cause us to lose our renderer or change the render type, in which case do not want to handle the event.
         if (!renderer() || !renderer()->isListBox())
             return;
 
         // Convert to coords relative to the list box if needed.
         GestureEvent& gestureEvent = toGestureEvent(*event);
         int listIndex = listIndexForEventTargetOption(gestureEvent);
         if (listIndex >= 0) {
-            if (!isDisabledFormControl())
+            if (!isDisabledFormControl()) {
                 updateSelectedState(listIndex, true, gestureEvent.shiftKey());
+                listBoxOnChange();
+            }
             event->setDefaultHandled();
         }
     } else if (event->type() == EventTypeNames::mousedown && event->isMouseEvent() && toMouseEvent(event)->button() == LeftButton) {
         focus();
         // Calling focus() may cause us to lose our renderer, in which case do not want to handle the event.
         if (!renderer() || !renderer()->isListBox() || isDisabledFormControl())
             return;
 
         // Convert to coords relative to the list box if needed.
         MouseEvent* mouseEvent = toMouseEvent(event);
@@ skipping 316 matching lines @@
     int focusedIndex = activeSelectionEndListIndex();
     if (focusedIndex < 0)
         focusedIndex = firstSelectableListIndex();
     if (focusedIndex < 0)
         return nullptr;
     HTMLElement* focused = listItems()[focusedIndex];
     return isHTMLOptionElement(focused) ? toHTMLOptionElement(focused) : nullptr;
 }
 
 } // namespace