Move rolling back badly parsed property to CSSPropertyParser::parseValue

Source/core/css/parser/CSSGrammar.y

 %{
 
 /*
  *  Copyright (C) 2002-2003 Lars Knoll (knoll@kde.org)
  *  Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  *  Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *  Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  *  Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
  *  This library is free software; you can redistribute it and/or
@@ skipping 393 matching lines @@
 
 internal_decls:
     INTERNAL_DECLS_SYM maybe_space_before_declaration declaration_list TOKEN_EOF {
         /* can be empty */
     }
 ;
 
 internal_value:
     INTERNAL_VALUE_SYM maybe_space expr TOKEN_EOF {
         parser->m_valueList = parser->sinkFloatingValueList($3);
-        int oldParsedProperties = parser->m_parsedProperties.size();
-        if (!parser->parseValue(parser->m_id, parser->m_important))
-            parser->rollbackLastProperties(parser->m_parsedProperties.size() - oldParsedProperties);
+        parser->parseValue(parser->m_id, parser->m_important);
         parser->m_valueList = nullptr;
     }
 ;
 
 internal_selector:
     INTERNAL_SELECTOR_SYM maybe_space selector_list TOKEN_EOF {
         if (parser->m_selectorListForParseSelector)
             parser->m_selectorListForParseSelector->adoptSelectorVector(*$3);
     }
 ;
@@ skipping 1085 matching lines @@
         $$ = $1 || $2;
     }
     ;
 
 declaration:
     property ':' maybe_space error_location expr prio {
         $$ = false;
         bool isPropertyParsed = false;
         if ($1 != CSSPropertyInvalid) {
             parser->m_valueList = parser->sinkFloatingValueList($5);
-            int oldParsedProperties = parser->m_parsedProperties.size();
             $$ = parser->parseValue($1, $6);
-            if (!$$) {
-                parser->rollbackLastProperties(parser->m_parsedProperties.size() - oldParsedProperties);
+            if (!$$)
                 parser->reportError($4, InvalidPropertyValueCSSError);
-            } else
+            else
                 isPropertyParsed = true;
             parser->m_valueList = nullptr;
         }
         parser->endProperty($6, isPropertyParsed);
     }
     |
     property ':' maybe_space error_location expr prio error error_recovery {
         /* When we encounter something like p {color: red !important fail;} we should drop the declaration */
         parser->reportError($4, InvalidPropertyValueCSSError);
         parser->endProperty(false, false);
@@ skipping 318 matching lines @@
     ;
 
 rule_error_recovery:
     /* empty */
   | rule_error_recovery error
   | rule_error_recovery invalid_square_brackets_block
   | rule_error_recovery invalid_parentheses_block
     ;
 
 %%