Disabled form control elements should not be active

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 5415 matching lines @@
         for (RenderObject* curr = oldActiveElement->renderer(); curr; curr = curr->parent()) {
             if (curr->node()) {
                 ASSERT(!curr->node()->isTextNode());
                 curr->node()->setActive(false);
                 m_userActionElements.setInActiveChain(curr->node(), false);
             }
         }
         setActiveHoverElement(nullptr);
     } else {
         Element* newActiveElement = innerElementInDocument;
-        if (!oldActiveElement && newActiveElement && request.active() && !request.touchMove()) {
+        if (!oldActiveElement && newActiveElement && !newActiveElement->isDisabledFormControl() && request.active() && !request.touchMove()) {
             // We are setting the :active chain and freezing it. If future moves happen, they
             // will need to reference this chain.
             for (RenderObject* curr = newActiveElement->renderer(); curr; curr = curr->parent()) {
                 if (curr->node() && !curr->isText())
                     m_userActionElements.setInActiveChain(curr->node(), true);
             }
 
             setActiveHoverElement(newActiveElement);
         }
     }
@@ skipping 366 matching lines @@
     visitor->trace(m_compositorPendingAnimations);
     visitor->trace(m_contextDocument);
     visitor->registerWeakMembers<Document, &Document::clearWeakMembers>(this);
     DocumentSupplementable::trace(visitor);
     TreeScope::trace(visitor);
     ContainerNode::trace(visitor);
     ExecutionContext::trace(visitor);
 }
 
 } // namespace WebCore