Add support for the column-fill property.

Source/core/css/CSSParser-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 773 matching lines @@
         if (valueID == CSSValueHorizontal || valueID == CSSValueVertical || valueID == CSSValueInlineAxis || valueID == CSSValueBlockAxis)
             return true;
         break;
     case CSSPropertyWebkitBoxPack:
         if (valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueCenter || valueID == CSSValueJustify)
             return true;
         break;
     case CSSPropertyInternalCallback:
         // This property is only injected programmatically, not parsed from stylesheets.
         return false;
+    case CSSPropertyColumnFill:
+        if (RuntimeEnabledFeatures::regionBasedColumnsEnabled()) {
+            if (valueID == CSSValueAuto || valueID == CSSValueBalance)
+                return true;
+        }
+        break;
     case CSSPropertyAlignContent:
          if (valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueSpaceBetween || valueID == CSSValueSpaceAround || valueID == CSSValueStretch)
              return true;
          break;
     case CSSPropertyAlignItems:
         if (valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline || valueID == CSSValueStretch)
             return true;
         break;
     case CSSPropertyAlignSelf:
         if (valueID == CSSValueAuto || valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline || valueID == CSSValueStretch)
@@ skipping 196 matching lines @@
     case CSSPropertyWebkitBoxAlign:
     case CSSPropertyWebkitBoxDecorationBreak:
     case CSSPropertyWebkitBoxDirection:
     case CSSPropertyWebkitBoxLines:
     case CSSPropertyWebkitBoxOrient:
     case CSSPropertyWebkitBoxPack:
     case CSSPropertyInternalCallback:
     case CSSPropertyWebkitColumnBreakAfter:
     case CSSPropertyWebkitColumnBreakBefore:
     case CSSPropertyWebkitColumnBreakInside:
+    case CSSPropertyColumnFill:
     case CSSPropertyWebkitColumnRuleStyle:
     case CSSPropertyAlignContent:
     case CSSPropertyAlignItems:
     case CSSPropertyAlignSelf:
     case CSSPropertyFlexDirection:
     case CSSPropertyFlexWrap:
     case CSSPropertyJustifyContent:
     case CSSPropertyWebkitFontKerning:
     case CSSPropertyWebkitFontSmoothing:
     case CSSPropertyGridAutoFlow:
@@ skipping 1828 matching lines @@
     case CSSPropertyWebkitBoxAlign:
     case CSSPropertyWebkitBoxDecorationBreak:
     case CSSPropertyWebkitBoxDirection:
     case CSSPropertyWebkitBoxLines:
     case CSSPropertyWebkitBoxOrient:
     case CSSPropertyWebkitBoxPack:
     case CSSPropertyInternalCallback:
     case CSSPropertyWebkitColumnBreakAfter:
     case CSSPropertyWebkitColumnBreakBefore:
     case CSSPropertyWebkitColumnBreakInside:
+    case CSSPropertyColumnFill:
     case CSSPropertyWebkitColumnRuleStyle:
     case CSSPropertyAlignContent:
     case CSSPropertyAlignItems:
     case CSSPropertyAlignSelf:
     case CSSPropertyFlexDirection:
     case CSSPropertyFlexWrap:
     case CSSPropertyJustifyContent:
     case CSSPropertyWebkitFontKerning:
     case CSSPropertyWebkitFontSmoothing:
     case CSSPropertyGridAutoFlow:
@@ skipping 9161 matching lines @@
 {
     // The tokenizer checks for the construct of an+b.
     // However, since the {ident} rule precedes the {nth} rule, some of those
     // tokens are identified as string literal. Furthermore we need to accept
     // "odd" and "even" which does not match to an+b.
     return equalIgnoringCase(token, "odd") || equalIgnoringCase(token, "even")
         || equalIgnoringCase(token, "n") || equalIgnoringCase(token, "-n");
 }
 
 }