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

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

 // 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.
 
 #ifndef CSSParser_h
 #define CSSParser_h
 
 #include "core/CSSPropertyNames.h"
 #include "core/CoreExport.h"
 #include "core/css/CSSValue.h"
+#include "core/css/CSSValuePool.h"
 #include "core/css/parser/CSSParserMode.h"
 #include "platform/graphics/Color.h"
 
 namespace blink {
 
 class CSSParserObserver;
 class CSSParserTokenRange;
 class CSSSelectorList;
 class Element;
 class ImmutableStylePropertySet;
@@ skipping 26 matching lines @@
 
     static RawPtr<ImmutableStylePropertySet> parseInlineStyleDeclaration(const String&, Element*);
 
     static PassOwnPtr<Vector<double>> parseKeyframeKeyList(const String&);
     static RawPtr<StyleRuleKeyframe> parseKeyframeRule(const CSSParserContext&, const String&);
 
     static bool parseSupportsCondition(const String&);
 
     // The color will only be changed when string contains a valid CSS color, so callers
     // can set it to a default color and ignore the boolean result.
-    static bool parseColor(Color&, const String&, bool strict = false);
+    static bool parseColor(Color&, const String&, CSSValuePool*, bool strict = false);
     static bool parseSystemColor(Color&, const String&);
 
     static void parseSheetForInspector(const CSSParserContext&, StyleSheetContents*, const String&, CSSParserObserver&);
     static void parseDeclarationListForInspector(const CSSParserContext&, const String&, CSSParserObserver&);
 
 private:
     static bool parseValue(MutableStylePropertySet*, CSSPropertyID unresolvedProperty, const String&, bool important, const CSSParserContext&);
 };
 
 } // namespace blink
 
 #endif // CSSParser_h