+ unsigned ruleIndexBySourceRange(const CSSMediaRule* parentMediaRule, const SourceRange&);
+ CSSStyleRule* insertCSSOMRuleInStyleSheet(const SourceRange&, const String& ruleText, ExceptionState&);
+ CSSStyleRule* insertCSSOMRuleInMediaRule(CSSMediaRule*, const SourceRange&, const String& ruleText, ExceptionState&);
+ CSSStyleRule* insertCSSOMRuleBySourceRange(const SourceRange&, const String& ruleText, ExceptionState&);
+ bool verifyRuleText(const String& ruleText);