Remove some unused functions in core

Source/core/css/parser/BisonCSSParser.h

Index: Source/core/css/parser/BisonCSSParser.h
diff --git a/Source/core/css/parser/BisonCSSParser.h b/Source/core/css/parser/BisonCSSParser.h
index 6ac5a43dd2137bf0ce5694d769ba860514acc9a2..24ef4976ce1225a943ff02b0685b027021c2760d 100644
--- a/Source/core/css/parser/BisonCSSParser.h
+++ b/Source/core/css/parser/BisonCSSParser.h
@@ -101,7 +101,6 @@ public:
     PassOwnPtr<CSSParserValueList> sinkFloatingValueList(CSSParserValueList*);
 
     CSSParserFunction* createFloatingFunction(const CSSParserString& name, PassOwnPtr<CSSParserValueList> args);
-    PassOwnPtr<CSSParserFunction> sinkFloatingFunction(CSSParserFunction*);
 
     CSSParserValue& sinkFloatingValue(CSSParserValue&);
 
@@ -290,9 +289,6 @@ private:
 
     OwnPtrWillBeMember<RuleSourceDataList> m_supportsRuleDataStack;
 
-    bool isLoggingErrors();
-    void logError(const String& message, const CSSParserLocation&);
-
     BisonCSSTokenizer m_tokenizer;
 
     friend class TransformOperationInfo;