Add a WebDocument::watchCssSelectors(selectors)

Source/core/css/CSSComputedStyleDeclaration.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 2760 matching lines @@
         case CSSPropertyMargin:
             return valuesForSidesShorthand(marginShorthand());
         case CSSPropertyOutline:
             return valuesForShorthandProperty(outlineShorthand());
         case CSSPropertyPadding:
             return valuesForSidesShorthand(paddingShorthand());
         /* Individual properties not part of the spec */
         case CSSPropertyBackgroundRepeatX:
         case CSSPropertyBackgroundRepeatY:
             break;
+        case CSSPropertyInternalCallback:
+            // This property is hidden from the web.
+            return 0;
 
         /* Unimplemented CSS 3 properties (including CSS3 shorthand properties) */
         case CSSPropertyWebkitTextEmphasis:
         case CSSPropertyTextLineThroughColor:
         case CSSPropertyTextLineThroughMode:
         case CSSPropertyTextLineThroughStyle:
         case CSSPropertyTextLineThroughWidth:
         case CSSPropertyTextOverlineColor:
         case CSSPropertyTextOverlineMode:
         case CSSPropertyTextOverlineStyle:
@@ skipping 362 matching lines @@
     static const CSSPropertyID propertiesAfterSlashSeperator[3] = { CSSPropertyBackgroundSize, CSSPropertyBackgroundOrigin,
                                                                     CSSPropertyBackgroundClip };
 
     RefPtr<CSSValueList> list = CSSValueList::createSlashSeparated();
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesBeforeSlashSeperator, WTF_ARRAY_LENGTH(propertiesBeforeSlashSeperator))));
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesAfterSlashSeperator, WTF_ARRAY_LENGTH(propertiesAfterSlashSeperator))));
     return list.release();
 }
 
 } // namespace WebCore