| Index: third_party/WebKit/Source/core/paint/GridPainter.cpp
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| diff --git a/third_party/WebKit/Source/core/paint/GridPainter.cpp b/third_party/WebKit/Source/core/paint/GridPainter.cpp
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| index c029941c40bb600a8afc5a8d9f1c71ea113e1a18..3fa13c81fed09305ca1f14ead3b79e3bff06916f 100644
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| --- a/third_party/WebKit/Source/core/paint/GridPainter.cpp
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| +++ b/third_party/WebKit/Source/core/paint/GridPainter.cpp
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| @@ -25,7 +25,7 @@ static GridSpan dirtiedGridAreas(const Vector<LayoutUnit>& coordinates, LayoutUn
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|          --endGridAreaIndex;
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|  
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|      // GridSpan stores lines' indexes (not tracks' indexes).
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| -    return GridSpan(startGridAreaIndex, endGridAreaIndex + 1);
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| +    return GridSpan::definiteGridSpan(startGridAreaIndex, endGridAreaIndex + 1);
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|  }
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|  
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|  class GridItemsSorter {
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| 
 |