Disallow setting invalid values for registered properties via CSSOM

third_party/WebKit/Source/core/css/CSSComputedStyleDeclaration.h

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 69 matching lines @@
 
   // CSSOM functions. Don't make these public.
   CSSRule* parentRule() const override;
   unsigned length() const override;
   String item(unsigned index) const override;
   const ComputedStyle* computeComputedStyle() const;
   String getPropertyValue(const String& propertyName) override;
   String getPropertyPriority(const String& propertyName) override;
   String getPropertyShorthand(const String& propertyName) override;
   bool isPropertyImplicit(const String& propertyName) override;
-  void setProperty(const String& propertyName,
+  void setProperty(const ExecutionContext*,
+                   const String& propertyName,
                    const String& value,
                    const String& priority,
                    ExceptionState&) override;
   String removeProperty(const String& propertyName, ExceptionState&) override;
   String cssFloat() const;
   void setCSSFloat(const String&, ExceptionState&);
   String cssText() const override;
   void setCSSText(const String&, ExceptionState&) override;
   const CSSValue* getPropertyCSSValueInternal(CSSPropertyID) override;
   const CSSValue* getPropertyCSSValueInternal(
       AtomicString customPropertyName) override;
   String getPropertyValueInternal(CSSPropertyID) override;
   void setPropertyInternal(CSSPropertyID,
                            const String& customPropertyName,
                            const String& value,
                            bool important,
+                           const ExecutionContext*,
                            ExceptionState&) override;
 
   bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const override;
 
   Member<Node> m_node;
   PseudoId m_pseudoElementSpecifier;
   bool m_allowVisitedStyle;
 };
 
 }  // namespace blink
 
 #endif  // CSSComputedStyleDeclaration_h