Make PropertyReference value() return a const CSSValue&

third_party/WebKit/Source/core/css/PropertySetCSSStyleDeclaration.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 125 matching lines @@
 {
     return propertySet().propertyCount();
 }
 
 String AbstractPropertySetCSSStyleDeclaration::item(unsigned i) const
 {
     if (i >= propertySet().propertyCount())
         return "";
     StylePropertySet::PropertyReference property = propertySet().propertyAt(i);
     if (RuntimeEnabledFeatures::cssVariablesEnabled() && property.id() == CSSPropertyVariable)
-        return toCSSCustomPropertyDeclaration(property.value())->name();
+        return toCSSCustomPropertyDeclaration(property.value()).name();
     if (property.id() == CSSPropertyApplyAtRule)
         return "@apply";
     return getPropertyName(property.id());
 }
 
 String AbstractPropertySetCSSStyleDeclaration::cssText() const
 {
     return propertySet().asText();
 }
 
@@ skipping 139 matching lines @@
 }
 
 StyleSheetContents* AbstractPropertySetCSSStyleDeclaration::contextStyleSheet() const
 {
     CSSStyleSheet* cssStyleSheet = parentStyleSheet();
     return cssStyleSheet ? cssStyleSheet->contents() : nullptr;
 }
 
 bool AbstractPropertySetCSSStyleDeclaration::cssPropertyMatches(CSSPropertyID propertyID, const CSSValue* propertyValue) const
 {
-    return propertySet().propertyMatches(propertyID, propertyValue);
+    return propertySet().propertyMatches(propertyID, *propertyValue);
 }
 
 DEFINE_TRACE(AbstractPropertySetCSSStyleDeclaration)
 {
     CSSStyleDeclaration::trace(visitor);
 }
 
 StyleRuleCSSStyleDeclaration::StyleRuleCSSStyleDeclaration(MutableStylePropertySet& propertySetArg, CSSRule* parentRule)
     : PropertySetCSSStyleDeclaration(propertySetArg)
     , m_parentRule(parentRule)
@@ skipping 57 matching lines @@
     return m_parentElement ? &m_parentElement->document().elementSheet() : nullptr;
 }
 
 DEFINE_TRACE(InlineCSSStyleDeclaration)
 {
     visitor->trace(m_parentElement);
     AbstractPropertySetCSSStyleDeclaration::trace(visitor);
 }
 
 } // namespace blink