Disallow setting invalid values for registered properties via CSSOM

third_party/WebKit/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
@@ skipping 497 matching lines @@
 }
 
 String CSSComputedStyleDeclaration::getPropertyShorthand(const String&) {
   return "";
 }
 
 bool CSSComputedStyleDeclaration::isPropertyImplicit(const String&) {
   return false;
 }
 
-void CSSComputedStyleDeclaration::setProperty(const String& name,
+void CSSComputedStyleDeclaration::setProperty(const ExecutionContext*,
+                                              const String& name,
                                               const String&,
                                               const String&,
                                               ExceptionState& exceptionState) {
   exceptionState.throwDOMException(
       NoModificationAllowedError,
       "These styles are computed, and therefore the '" + name +
           "' property is read-only.");
 }
 
 String CSSComputedStyleDeclaration::removeProperty(
@@ skipping 19 matching lines @@
 String CSSComputedStyleDeclaration::getPropertyValueInternal(
     CSSPropertyID propertyID) {
   return getPropertyValue(propertyID);
 }
 
 void CSSComputedStyleDeclaration::setPropertyInternal(
     CSSPropertyID id,
     const String&,
     const String&,
     bool,
+    const ExecutionContext*,
     ExceptionState& exceptionState) {
   // TODO(leviw): This code is currently unreachable, but shouldn't be.
   exceptionState.throwDOMException(
       NoModificationAllowedError,
       "These styles are computed, and therefore the '" +
           getPropertyNameString(id) + "' property is read-only.");
 }
 
 DEFINE_TRACE(CSSComputedStyleDeclaration) {
   visitor->trace(m_node);
   CSSStyleDeclaration::trace(visitor);
 }
 
 }  // namespace blink