Make CSSValueList store const CSSValues

third_party/WebKit/Source/core/css/cssom/StylePropertyMap.cpp

 // Copyright 2016 the chromium authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/cssom/StylePropertyMap.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/css/CSSValueList.h"
 #include "core/css/cssom/CSSSimpleLength.h"
 #include "core/css/cssom/CSSStyleValue.h"
@@ skipping 110 matching lines @@
 {
     StyleValueVector styleValueVector;
 
     if (!cssValue.isValueList()) {
         CSSStyleValue* styleValue = StyleValueFactory::create(propertyID, cssValue);
         if (styleValue)
             styleValueVector.append(styleValue);
         return styleValueVector;
     }
 
-    for (CSSValue* value : *toCSSValueList(&cssValue)) {
+    for (const CSSValue* value : toCSSValueList(cssValue)) {
         CSSStyleValue* styleValue = StyleValueFactory::create(propertyID, *value);
         if (!styleValue)
             return StyleValueVector();
         styleValueVector.append(styleValue);
     }
     return styleValueVector;
 }
 
 StylePropertyMap::IterationSource* StylePropertyMap::startIteration(ScriptState*, ExceptionState&)
 {
     return new StylePropertyMapIterationSource(getIterationEntries());
 }
 
 } // namespace blink