InitialColumnHeightFinder needs to take all expected rows into account.

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

Index: third_party/WebKit/Source/core/layout/MultiColumnFragmentainerGroup.cpp
diff --git a/third_party/WebKit/Source/core/layout/MultiColumnFragmentainerGroup.cpp b/third_party/WebKit/Source/core/layout/MultiColumnFragmentainerGroup.cpp
index 3e9379a575e9e4d3e267d9c5daefa81c8c2edf2d..e8a89294b234556fb1657b9f1935f098034b8ddc 100644
--- a/third_party/WebKit/Source/core/layout/MultiColumnFragmentainerGroup.cpp
+++ b/third_party/WebKit/Source/core/layout/MultiColumnFragmentainerGroup.cpp
@@ -80,13 +80,9 @@ bool MultiColumnFragmentainerGroup::recalculateColumnHeight(
       // another layout pass with the column height that we just calculated.
       InitialColumnHeightFinder initialHeightFinder(
           columnSet, logicalTopInFlowThread(), logicalBottomInFlowThread());
-      LayoutUnit tallestUnbreakableLogicalHeight =
-          initialHeightFinder.tallestUnbreakableLogicalHeight();
       columnSet.propagateTallestUnbreakableLogicalHeight(
-          tallestUnbreakableLogicalHeight);
-      newColumnHeight =
-          std::max(initialHeightFinder.initialMinimalBalancedHeight(),
-                   tallestUnbreakableLogicalHeight);
+          initialHeightFinder.tallestUnbreakableLogicalHeight());
+      newColumnHeight = initialHeightFinder.initialMinimalBalancedHeight();
     } else {
       // Rebalancing: After having laid out again, we'll need to rebalance if
       // the height wasn't enough and we're allowed to stretch it, and then