Div having contentEditable and display:grid cannot be edited if it is empty.

Source/core/rendering/RenderGrid.cpp

Index: Source/core/rendering/RenderGrid.cpp
diff --git a/Source/core/rendering/RenderGrid.cpp b/Source/core/rendering/RenderGrid.cpp
index 07451ab9878f5f4a62b554b0e3ef2095ebbbbafb..8baf47e8190c9e76845d4ed226f8046ef07b657e 100644
--- a/Source/core/rendering/RenderGrid.cpp
+++ b/Source/core/rendering/RenderGrid.cpp
@@ -1148,8 +1148,14 @@ void RenderGrid::layoutGridItems()
         setLogicalHeight(logicalHeight() + row.baseSize());
 
     // Min / max logical height is handled by the call to updateLogicalHeight in layoutBlock.
-
     setLogicalHeight(logicalHeight() + borderAndPaddingLogicalHeight());
+    if (hasLineIfEmpty()) {
+        LayoutUnit minHeight = borderAndPaddingLogicalHeight()
+            + lineHeight(true, isHorizontalWritingMode() ? HorizontalLine : VerticalLine, PositionOfInteriorLineBoxes)
+            + scrollbarLogicalHeight();
+        if (size().height() < minHeight)
+            setLogicalHeight(minHeight);
+    }

[rune, 2015/02/25 11:34:53]

This code is identical to the code in RenderFlexibleBox. How about making this a
method on RenderBlock?

I don't have a good name for it, though.

 }
 
 void RenderGrid::layoutPositionedObjects(bool relayoutChildren, PositionedLayoutBehavior info)