[css-grid] Add parsing support for <auto-repeat> syntax

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

Index: third_party/WebKit/Source/core/css/parser/CSSPropertyParser.h
diff --git a/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.h b/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.h
index d13ae72455a31c97087591f7aa291a382949fbc1..da98c2d7b42e39e0cf216affe8a3ffbd0d5edbc1 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.h
+++ b/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.h
@@ -168,6 +168,7 @@ private:
 
     bool consumeColumns(bool important);
 
+    enum TrackSizeRestriction { FixedSizeOnly, AllowAll };
     PassRefPtrWillBeRawPtr<CSSValue> parseGridPosition();
     bool parseIntegerOrCustomIdentFromGridPosition(RefPtrWillBeRawPtr<CSSPrimitiveValue>& numericValue, RefPtrWillBeRawPtr<CSSCustomIdentValue>& gridLineName);
     bool parseGridItemPositionShorthand(CSSPropertyID, bool important);
@@ -178,9 +179,9 @@ private:
     bool parseGridGapShorthand(bool important);
     bool parseSingleGridAreaLonghand(RefPtrWillBeRawPtr<CSSValue>&);
     PassRefPtrWillBeRawPtr<CSSValue> parseGridTrackList();
-    bool parseGridTrackRepeatFunction(CSSValueList&);
-    PassRefPtrWillBeRawPtr<CSSValue> parseGridTrackSize(CSSParserValueList& inputList);
-    PassRefPtrWillBeRawPtr<CSSPrimitiveValue> parseGridBreadth(CSSParserValue*);
+    bool parseGridTrackRepeatFunction(CSSValueList&, bool& isAutoRepeat);
+    PassRefPtrWillBeRawPtr<CSSValue> parseGridTrackSize(CSSParserValueList& inputList, TrackSizeRestriction = AllowAll);
+    PassRefPtrWillBeRawPtr<CSSPrimitiveValue> parseGridBreadth(CSSParserValue*, TrackSizeRestriction = AllowAll);
     bool parseGridTemplateAreasRow(NamedGridAreaMap&, const size_t, size_t&);
     PassRefPtrWillBeRawPtr<CSSValue> parseGridTemplateAreas();
     bool parseGridLineNames(CSSParserValueList&, CSSValueList&, CSSGridLineNamesValue* = nullptr);