Added backround-repeat-x and -y as keyword properties.

Source/core/css/parser/BisonCSSParser-in.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 349 matching lines @@
     declaration->addParsedProperty(CSSProperty(propertyId, value.release(), important));
     return true;
 }
 
 bool isValidKeywordPropertyAndValue(CSSPropertyID propertyId, int valueID, const CSSParserContext& parserContext)
 {
     if (!valueID)
         return false;
 
     switch (propertyId) {
+    case CSSPropertyBackgroundRepeatX: // repeat | no-repeat | inherit
+    case CSSPropertyBackgroundRepeatY: // repeat | no-repeat | inherit
+        if (valueID == CSSValueRepeat || valueID == CSSValueNoRepeat)
+            return true;
+        break;
     case CSSPropertyBorderCollapse: // collapse | separate | inherit
         if (valueID == CSSValueCollapse || valueID == CSSValueSeparate)
             return true;
         break;
     case CSSPropertyBorderTopStyle: // <border-style> | inherit
     case CSSPropertyBorderRightStyle: // Defined as: none | hidden | dotted | dashed |
     case CSSPropertyBorderBottomStyle: // solid | double | groove | ridge | inset | outset
     case CSSPropertyBorderLeftStyle:
     case CSSPropertyWebkitBorderAfterStyle:
     case CSSPropertyWebkitBorderBeforeStyle:
@@ skipping 352 matching lines @@
         return false;
     }
     return false;
 }
 
 bool isKeywordPropertyID(CSSPropertyID propertyId)
 {
     switch (propertyId) {
     case CSSPropertyMixBlendMode:
     case CSSPropertyIsolation:
+    case CSSPropertyBackgroundRepeatX:
+    case CSSPropertyBackgroundRepeatY:
     case CSSPropertyBorderBottomStyle:
     case CSSPropertyBorderCollapse:
     case CSSPropertyBorderLeftStyle:
     case CSSPropertyBorderRightStyle:
     case CSSPropertyBorderTopStyle:
     case CSSPropertyBoxSizing:
     case CSSPropertyCaptionSide:
     case CSSPropertyClear:
     case CSSPropertyDirection:
     case CSSPropertyDisplay:
@@ skipping 1490 matching lines @@
     rule->setProperties(createStylePropertySet());
     clearProperties();
 
     StyleRuleViewport* result = rule.get();
     m_parsedRules.append(rule.release());
 
     return result;
 }
 
 }