Remove UseCounter

sky/engine/core/css/parser/CSSParserMode.h

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
@@ skipping 49 matching lines @@
 inline bool isUnitLessLengthParsingEnabledForMode(CSSParserMode mode)
 {
     return false;
 }
 
 inline bool isCSSViewportParsingEnabledForMode(CSSParserMode mode)
 {
     return false;
 }
 
-class UseCounter;
-
 class CSSParserContext {
     WTF_MAKE_FAST_ALLOCATED;
 public:
-    explicit CSSParserContext(UseCounter*);
-    // FIXME: We shouldn't need the UseCounter argument as we could infer it from the Document
-    // but some callers want to disable use counting (e.g. the WebInspector).
-    CSSParserContext(const Document&, UseCounter*, const KURL& baseURL = KURL());
-    // FIXME: This constructor shouldn't exist if we properly piped the UseCounter through the CSS
-    // subsystem. Currently the UseCounter life time is too crazy and we need a way to override it.
-    CSSParserContext(const CSSParserContext&, UseCounter*);
+    explicit CSSParserContext();
+    CSSParserContext(const Document&, const KURL& baseURL = KURL());
+    CSSParserContext(const CSSParserContext&);
 
     bool operator==(const CSSParserContext&) const;
     bool operator!=(const CSSParserContext& other) const { return !(*this == other); }
 
     CSSParserMode mode() const { return HTMLStandardMode; }
     const KURL& baseURL() const { return m_baseURL; }
     const Referrer& referrer() const { return m_referrer; }
 
     // This causes CSS parsing to be case insensitive and should be removed.
     bool isHTMLDocument() const { return true; }
 
     // FIXME: These setters shouldn't exist, however the current lifetime of CSSParserContext
     // is not well understood and thus we sometimes need to override these fields.
     void setBaseURL(const KURL& baseURL) { m_baseURL = baseURL; }
     void setReferrer(const Referrer& referrer) { m_referrer = referrer; }
 
     KURL completeURL(const String& url) const;
 
-    UseCounter* useCounter() const { return m_useCounter; }
-
 private:
     KURL m_baseURL;
     Referrer m_referrer;
-
-    UseCounter* m_useCounter;
 };
 
 const CSSParserContext& strictCSSParserContext();
 
 };
 
 #endif  // SKY_ENGINE_CORE_CSS_PARSER_CSSPARSERMODE_H_