Dynamic updation of checked and selected attributes should reflect correct :default status

third_party/WebKit/Source/core/html/HTMLOptionElement.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@nypop.com)
  * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Motorola Mobility, Inc.  All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 198 matching lines @@
     } else if (name == disabledAttr) {
         if (oldValue.isNull() != value.isNull()) {
             pseudoStateChanged(CSSSelector::PseudoDisabled);
             pseudoStateChanged(CSSSelector::PseudoEnabled);
             if (layoutObject())
                 LayoutTheme::theme().controlStateChanged(*layoutObject(), EnabledControlState);
         }
     } else if (name == selectedAttr) {
         if (oldValue.isNull() != value.isNull() && !m_isDirty)
             setSelected(!value.isNull());
+        pseudoStateChanged(CSSSelector::PseudoDefault);
     } else if (name == labelAttr) {
         updateLabel();
     } else {
         HTMLElement::parseAttribute(name, oldValue, value);
     }
 }
 
 String HTMLOptionElement::value() const
 {
     const AtomicString& value = fastGetAttribute(valueAttr);
@@ skipping 251 matching lines @@
         ASSERT(parent);
         if (isHTMLOptGroupElement(*parent)) {
             const ComputedStyle* parentStyle = parent->computedStyle() ? parent->computedStyle() : parent->ensureComputedStyle();
             return !parentStyle || parentStyle->display() == NONE;
         }
     }
     return m_style->display() == NONE;
 }
 
 } // namespace blink