Send mouse events for disabled form controls.

third_party/WebKit/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.
@@ skipping 1477 matching lines @@
     focus();
     // Calling focus() may cause us to lose our layoutObject, in which case
     // do not want to handle the event.
     if (!GetLayoutObject() || !GetLayoutObject()->IsListBox() ||
         IsDisabledFormControl())
       return;
 
     // Convert to coords relative to the list box if needed.
     MouseEvent* mouse_event = ToMouseEvent(event);
     if (HTMLOptionElement* option = EventTargetOption(*mouse_event)) {
-      if (!IsDisabledFormControl()) {
+      if (!option->IsDisabledFormControl()) {
 #if OS(MACOSX)
         UpdateSelectedState(option, mouse_event->metaKey(),
                             mouse_event->shiftKey());
 #else
         UpdateSelectedState(option, mouse_event->ctrlKey(),
                             mouse_event->shiftKey());
 #endif
       }
       if (LocalFrame* frame = GetDocument().GetFrame())
         frame->GetEventHandler().SetMouseDownMayStartAutoscroll();
@@ skipping 546 matching lines @@
   popup_updater_ = nullptr;
 }
 
 void HTMLSelectElement::DidMutateSubtree() {
   DCHECK(PopupIsVisible());
   DCHECK(popup_);
   popup_->UpdateFromElement(PopupMenu::kByDOMChange);
 }
 
 }  // namespace blink