Make CSSPropertyParser::parseSingleValue return a const CSSValue*

third_party/WebKit/Source/core/css/parser/CSSParser.cpp

 // Copyright 2014 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/parser/CSSParser.h"
 
 #include "core/css/CSSColorValue.h"
 #include "core/css/CSSKeyframeRule.h"
 #include "core/css/StyleColor.h"
 #include "core/css/StylePropertySet.h"
@@ skipping 82 matching lines @@
 ImmutableStylePropertySet* CSSParser::parseCustomPropertySet(CSSParserTokenRange range)
 {
     return CSSParserImpl::parseCustomPropertySet(range);
 }
 
 bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID unresolvedProperty, const String& string, bool important, const CSSParserContext& context)
 {
     return CSSParserImpl::parseValue(declaration, unresolvedProperty, string, important, context);
 }
 
-CSSValue* CSSParser::parseSingleValue(CSSPropertyID propertyID, const String& string, const CSSParserContext& context)
+const CSSValue* CSSParser::parseSingleValue(CSSPropertyID propertyID, const String& string, const CSSParserContext& context)
 {
     if (string.isEmpty())
         return nullptr;
     if (CSSValue* value = CSSParserFastPaths::maybeParseValue(propertyID, string, context.mode()))
         return value;
     CSSTokenizer::Scope scope(string);
     return CSSPropertyParser::parseSingleValue(propertyID, scope.tokenRange(), context);
 }
 
 ImmutableStylePropertySet* CSSParser::parseInlineStyleDeclaration(const String& styleString, Element* element)
@@ skipping 25 matching lines @@
         return false;
 
     // The regular color parsers don't resolve named colors, so explicitly
     // handle these first.
     Color namedColor;
     if (namedColor.setNamedColor(string)) {
         color = namedColor;
         return true;
     }
 
-    CSSValue* value = CSSParserFastPaths::parseColor(string, strict ? HTMLStandardMode : HTMLQuirksMode);
+    const CSSValue* value = CSSParserFastPaths::parseColor(string, strict ? HTMLStandardMode : HTMLQuirksMode);
     // TODO(timloh): Why is this always strict mode?
     if (!value)
         value = parseSingleValue(CSSPropertyColor, string, strictCSSParserContext());
 
     if (!value || !value->isColorValue())
         return false;
     color = toCSSColorValue(*value).value();
     return true;
 }
 
@@ skipping 15 matching lines @@
     builder.append(" : ");
     builder.append(propertyValue);
     builder.append("; }");
     StyleRuleBase* rule = parseRule(context, nullptr, builder.toString());
     if (!rule || !rule->isFontFaceRule())
         return nullptr;
     return toStyleRuleFontFace(rule)->properties().getPropertyCSSValue(propertyID);
 }
 
 } // namespace blink