Blur immediately if an attribute change made an element unfocasable.

third_party/WebKit/Source/core/dom/Document.h

 /*
  * 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, 2010, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 688 matching lines @@
   String selectedStylesheetSet() const;
   void setSelectedStylesheetSet(const String&);
 
   bool setFocusedElement(Element*, const FocusParams&);
   void clearFocusedElement();
   Element* focusedElement() const { return m_focusedElement.get(); }
   UserActionElementSet& userActionElements() { return m_userActionElements; }
   const UserActionElementSet& userActionElements() const {
     return m_userActionElements;
   }
-  void setNeedsFocusedElementCheck();
   void setAutofocusElement(Element*);
   Element* autofocusElement() const { return m_autofocusElement.get(); }
   void setSequentialFocusNavigationStartingPoint(Node*);
   Element* sequentialFocusNavigationStartingPoint(WebFocusType) const;
 
   void setActiveHoverElement(Element*);
   Element* activeHoverElement() const { return m_activeHoverElement.get(); }
 
   Node* hoverNode() const { return m_hoverNode.get(); }
 
@@ skipping 999 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif  // Document_h