Move rendering/RenderBox to layout/LayoutBox.

Source/core/layout/MultiColumnFragmentainerGroup.cpp

Index: Source/core/layout/MultiColumnFragmentainerGroup.cpp
diff --git a/Source/core/layout/MultiColumnFragmentainerGroup.cpp b/Source/core/layout/MultiColumnFragmentainerGroup.cpp
index 1b3e317cbe681092ab12cab97850b10a1def8d7f..93a138c1bf999cd09349059deba4b5f4d18a8bb5 100644
--- a/Source/core/layout/MultiColumnFragmentainerGroup.cpp
+++ b/Source/core/layout/MultiColumnFragmentainerGroup.cpp
@@ -162,7 +162,7 @@ void MultiColumnFragmentainerGroup::collectLayerFragments(LayerFragments& fragme
     //
     // All other rectangles in this method are sized physically, and the inline direction coordinate
     // is physical too, but the block direction coordinate is "logical top". This is the same as
-    // e.g. RenderBox::frameRect(). These rectangles also pretend that there's only one long column,
+    // e.g. LayoutBox::frameRect(). These rectangles also pretend that there's only one long column,
     // i.e. they are for the flow thread.
 
     LayoutMultiColumnFlowThread* flowThread = m_columnSet.multiColumnFlowThread();