[css-grid] Store lines instead of tracks in GridResolvedPosition

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

Index: third_party/WebKit/Source/core/css/parser/LegacyCSSPropertyParser.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/LegacyCSSPropertyParser.cpp b/third_party/WebKit/Source/core/css/parser/LegacyCSSPropertyParser.cpp
index eae576e89c50cee8cd40bc98a5d18b2e98f80fad..a2cf5af48d9feb0608c7a52f94a4aee9d221f88c 100644
--- a/third_party/WebKit/Source/core/css/parser/LegacyCSSPropertyParser.cpp
+++ b/third_party/WebKit/Source/core/css/parser/LegacyCSSPropertyParser.cpp
@@ -2973,13 +2973,13 @@ bool CSSPropertyParser::parseGridTemplateAreasRow(NamedGridAreaMap& gridAreaMap,
 
         NamedGridAreaMap::iterator gridAreaIt = gridAreaMap.find(gridAreaName);
         if (gridAreaIt == gridAreaMap.end()) {
-            gridAreaMap.add(gridAreaName, GridCoordinate(GridSpan(rowCount, rowCount), GridSpan(currentCol, lookAheadCol)));
+            gridAreaMap.add(gridAreaName, GridCoordinate(GridSpan(rowCount, rowCount + 1), GridSpan(currentCol, lookAheadCol + 1)));
         } else {
             GridCoordinate& gridCoordinate = gridAreaIt->value;
 
             // The following checks test that the grid area is a single filled-in rectangle.
             // 1. The new row is adjacent to the previously parsed row.
-            if (rowCount != gridCoordinate.rows.resolvedFinalPosition.next().toInt())
+            if (rowCount != gridCoordinate.rows.resolvedFinalPosition.toInt())
                 return false;
 
             // 2. The new area starts at the same position as the previously parsed area.
@@ -2987,7 +2987,7 @@ bool CSSPropertyParser::parseGridTemplateAreasRow(NamedGridAreaMap& gridAreaMap,
                 return false;
 
             // 3. The new area ends at the same position as the previously parsed area.
-            if (lookAheadCol != gridCoordinate.columns.resolvedFinalPosition.toInt())
+            if (lookAheadCol != gridCoordinate.columns.resolvedFinalPosition.prev().toInt())
                 return false;
 
             ++gridCoordinate.rows.resolvedFinalPosition;