Implements CSSPropertyAPI for the fragmentation element properties.

third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp

Index: third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp b/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
index b47f79a5368717d900c779f3e64d61bbbe5332ea..3757d440bcfd1bccd1b63d96bb400100290fe895 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
@@ -3089,10 +3089,6 @@ const CSSValue* CSSPropertyParser::parseSingleValue(
                                     ValueRangeNonNegative);
     case CSSPropertyShapeImageThreshold:
       return consumeNumber(m_range, ValueRangeAll);
-    case CSSPropertyWebkitBoxOrdinalGroup:
-    case CSSPropertyOrphans:
-    case CSSPropertyWidows:
-      return consumePositiveInteger(m_range);
     case CSSPropertyWebkitTextStrokeWidth:
       return consumeTextStrokeWidth(m_range, m_context->mode());
     case CSSPropertyWebkitTextFillColor: