Cannot do simplified layout on an object that contains a column-spanner.

third_party/WebKit/Source/core/layout/LayoutBlock.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBlock.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp b/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
index 6774606bbe87f2d44541a216072c22e94fcafb04..f942d6ebaee394f8d6e0f9178f9d9aebfc7d1f27 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
@@ -1093,6 +1093,11 @@ bool LayoutBlock::simplifiedLayout()
         if (needsPositionedMovementLayout() && !tryLayoutDoingPositionedMovementOnly())
             return false;
 
+        if (LayoutFlowThread* flowThread = flowThreadContainingBlock()) {
+            if (!flowThread->canSkipLayout(*this))
+                return false;
+        }
+
         TextAutosizer::LayoutScope textAutosizerLayoutScope(this);
 
         // Lay out positioned descendants or objects that just need to recompute overflow.