Make CSSValuePool thread local to ensure correct parsing in colors on workers

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

Index: third_party/WebKit/Source/core/css/parser/CSSParserFastPaths.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSParserFastPaths.cpp b/third_party/WebKit/Source/core/css/parser/CSSParserFastPaths.cpp
index 4eb704ab21073588573eab840d21a7941942430a..861b443c6eee40e03f79fffba4039538dc1adb26 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSParserFastPaths.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSParserFastPaths.cpp
@@ -437,7 +437,7 @@ static bool fastParseColorInternal(RGBA32& rgb, const CharacterType* characters,
     return false;
 }
 
-RawPtr<CSSValue> CSSParserFastPaths::parseColor(const String& string, CSSParserMode parserMode)
+RawPtr<CSSValue> CSSParserFastPaths::parseColor(const String& string, CSSParserMode parserMode, CSSValuePool* cssValuePool)
 {
     ASSERT(!string.isEmpty());
     CSSParserString cssString;
@@ -446,7 +446,7 @@ RawPtr<CSSValue> CSSParserFastPaths::parseColor(const String& string, CSSParserM
     if (CSSPropertyParser::isColorKeyword(valueID)) {
         if (!isValueAllowedInMode(valueID, parserMode))
             return nullptr;
-        return cssValuePool().createIdentifierValue(valueID);
+        return cssValuePool->createIdentifierValue(valueID);
     }
 
     RGBA32 color;
@@ -460,7 +460,7 @@ RawPtr<CSSValue> CSSParserFastPaths::parseColor(const String& string, CSSParserM
         parseResult = fastParseColorInternal(color, string.characters16(), string.length(), quirksMode);
     if (!parseResult)
         return nullptr;
-    return cssValuePool().createColorValue(color);
+    return cssValuePool->createColorValue(color);
 }
 
 bool CSSParserFastPaths::isValidKeywordPropertyAndValue(CSSPropertyID propertyId, CSSValueID valueID)
@@ -1021,12 +1021,12 @@ static RawPtr<CSSValue> parseSimpleTransform(CSSPropertyID propertyID, const Str
     return parseSimpleTransformList(pos, end);
 }
 
-RawPtr<CSSValue> CSSParserFastPaths::maybeParseValue(CSSPropertyID propertyID, const String& string, CSSParserMode parserMode)
+RawPtr<CSSValue> CSSParserFastPaths::maybeParseValue(CSSPropertyID propertyID, const String& string, CSSParserMode parserMode, CSSValuePool* localCSSValuePool)
 {
     if (RawPtr<CSSValue> length = parseSimpleLengthValue(propertyID, string, parserMode))
         return length.release();
     if (isColorPropertyID(propertyID))
-        return parseColor(string, parserMode);
+        return parseColor(string, parserMode, localCSSValuePool);
     if (RawPtr<CSSValue> keyword = parseKeywordValue(propertyID, string))
         return keyword.release();
     if (RawPtr<CSSValue> transform = parseSimpleTransform(propertyID, string))