[css-grid] grid-auto-flow|row should take a <track-size>+

third_party/WebKit/Source/core/style/ComputedStyle.cpp

Index: third_party/WebKit/Source/core/style/ComputedStyle.cpp
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.cpp b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
index 8f5d6fb33f8b9fe0804b06bc60f51b422a48628d..eb7388e1a49ac2be23797abc0e254b78ae534e4b 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.cpp
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
@@ -1925,6 +1925,23 @@ bool ComputedStyle::shadowListHasCurrentColor(const ShadowList* shadowList)
     return false;
 }
 
+static inline Vector<GridTrackSize> initialGridAutoTracks()
+{
+    Vector<GridTrackSize> trackSizeList;
+    trackSizeList.append(GridTrackSize(Length(Auto)));
+    return trackSizeList;
+}
+
+Vector<GridTrackSize> ComputedStyle::initialGridAutoColumns()
+{
+    return initialGridAutoTracks();
+}
+
+Vector<GridTrackSize> ComputedStyle::initialGridAutoRows()
+{
+    return initialGridAutoTracks();
+}
+
 int adjustForAbsoluteZoom(int value, float zoomFactor)
 {
     if (zoomFactor == 1)