Reporing invalid CSS selectors.

Source/core/css/CSSParser.h

Index: Source/core/css/CSSParser.h
diff --git a/Source/core/css/CSSParser.h b/Source/core/css/CSSParser.h
index aec52612b9f4a2e3f484e47959277e0c392fffe0..b128652d75c3addb08b6352017189e07b949e7e7 100644
--- a/Source/core/css/CSSParser.h
+++ b/Source/core/css/CSSParser.h
@@ -79,6 +79,8 @@ public:
         PropertyDeclarationError,
         InvalidPropertyValueError,
         InvalidPropertyError,
+        InvalidSelectorError,
+        InvalidRuleError,
         GeneralError
     };
 
@@ -368,7 +370,7 @@ public:
     bool m_hasFontFaceOnlyValues;
     bool m_hadSyntacticallyValidCSSRule;
     bool m_logErrors;
-    bool m_ignoreErrorsInDeclaration;
+    bool m_ignoreErrors;
 
     bool m_inFilterRule;
 
@@ -388,7 +390,10 @@ public:
     void startProperty();
     void endProperty(bool isImportantFound, bool isPropertyParsed, ErrorType = NoError);
     void startEndUnknownRule();
+
+    void endInvalidRuleHeader();
     void reportError(const CSSParserLocation&, ErrorType = GeneralError);
+    void resumeErrorLogging() { m_ignoreErrors = false; }
 
     inline int lex(void* yylval) { return (this->*m_lexFunc)(yylval); }
 
@@ -569,6 +574,9 @@ private:
     int m_lineNumber;
     int m_tokenStartLineNumber;
     int m_lastSelectorLineNumber;
+    CSSRuleSourceData::Type m_ruleHeaderType;
+    unsigned m_ruleHeaderStartOffset;
+    int m_ruleHeaderStartLineNumber;
 
     bool m_allowImportRules;
     bool m_allowNamespaceDeclarations;
@@ -679,8 +687,6 @@ private:
 struct CSSParserLocation {
     int lineNumber;
     CSSParserString content;
-
-    CSSParserLocation trimTrailingWhitespace() const;
 };
 
 class CSSParser::SourceDataHandler {