Make CSSValueList store const CSSValues

third_party/WebKit/Source/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
@@ skipping 456 matching lines @@
     state.style()->setTextIndentType(ComputedStyle::initialTextIndentType());
 }
 
 void StyleBuilderFunctions::applyValueCSSPropertyTextIndent(StyleResolverState& state, const CSSValue& value)
 {
     Length lengthOrPercentageValue;
     TextIndentLine textIndentLineValue = ComputedStyle::initialTextIndentLine();
     TextIndentType textIndentTypeValue = ComputedStyle::initialTextIndentType();
 
     for (auto& listValue : toCSSValueList(value)) {
-        CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(listValue.get());
+        const CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(listValue.get());
         if (!primitiveValue->getValueID())
             lengthOrPercentageValue = primitiveValue->convertToLength(state.cssToLengthConversionData());
         else if (primitiveValue->getValueID() == CSSValueEachLine)
             textIndentLineValue = TextIndentEachLine;
         else if (primitiveValue->getValueID() == CSSValueHanging)
             textIndentTypeValue = TextIndentHanging;
         else
             NOTREACHED();
     }
 
@@ skipping 207 matching lines @@
         return;
     }
 
     ContentData* firstContent = nullptr;
     ContentData* prevContent = nullptr;
     for (auto& item : toCSSValueList(value)) {
         ContentData* nextContent = nullptr;
         if (item->isImageGeneratorValue() || item->isImageSetValue() || item->isImageValue()) {
             nextContent = ContentData::create(state.styleImage(CSSPropertyContent, *item));
         } else if (item->isCounterValue()) {
-            CSSCounterValue* counterValue = toCSSCounterValue(item.get());
+            const CSSCounterValue* counterValue = toCSSCounterValue(item.get());
             EListStyleType listStyleType = NoneListStyle;
             CSSValueID listStyleIdent = counterValue->listStyle();
             if (listStyleIdent != CSSValueNone)
                 listStyleType = static_cast<EListStyleType>(listStyleIdent - CSSValueDisc);
             OwnPtr<CounterContent> counter = adoptPtr(new CounterContent(AtomicString(counterValue->identifier()), listStyleType, AtomicString(counterValue->separator())));
             nextContent = ContentData::create(std::move(counter));
         } else if (item->isPrimitiveValue()) {
             QuoteType quoteType;
             switch (toCSSPrimitiveValue(*item).getValueID()) {
             default:
                 NOTREACHED();
             case CSSValueOpenQuote:
                 quoteType = OPEN_QUOTE;
                 break;
             case CSSValueCloseQuote:
                 quoteType = CLOSE_QUOTE;
                 break;
             case CSSValueNoOpenQuote:
                 quoteType = NO_OPEN_QUOTE;
                 break;
             case CSSValueNoCloseQuote:
                 quoteType = NO_CLOSE_QUOTE;
                 break;
             }
             nextContent = ContentData::create(quoteType);
         } else {
             String string;
             if (item->isFunctionValue()) {
-                CSSFunctionValue* functionValue = toCSSFunctionValue(item.get());
+                const CSSFunctionValue* functionValue = toCSSFunctionValue(item.get());
                 DCHECK_EQ(functionValue->functionType(), CSSValueAttr);
                 // FIXME: Can a namespace be specified for an attr(foo)?
                 if (state.style()->styleType() == PseudoIdNone)
                     state.style()->setUnique();
                 else
                     state.parentStyle()->setUnique();
                 QualifiedName attr(nullAtom, AtomicString(toCSSCustomIdentValue(functionValue->item(0))->value()), nullAtom);
                 const AtomicString& value = state.element()->getAttribute(attr);
                 string = value.isNull() ? emptyString() : value.getString();
             } else {
@@ skipping 126 matching lines @@
     }
 }
 
 void StyleBuilderFunctions::applyInheritCSSPropertyPosition(StyleResolverState& state)
 {
     if (!state.parentNode()->isDocumentNode())
         state.style()->setPosition(state.parentStyle()->position());
 }
 
 } // namespace blink