Respect constrained height on nested multicol containers.

third_party/WebKit/Source/core/layout/LayoutMultiColumnSet.h

 /*
  * Copyright (C) 2012 Apple Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 118 matching lines @@
   LayoutBlockFlow* multiColumnBlockFlow() const {
     return toLayoutBlockFlow(parent());
   }
   LayoutMultiColumnFlowThread* multiColumnFlowThread() const {
     return toLayoutMultiColumnFlowThread(flowThread());
   }
 
   LayoutMultiColumnSet* nextSiblingMultiColumnSet() const;
   LayoutMultiColumnSet* previousSiblingMultiColumnSet() const;
 
-  // Return true if we have a fragmentainer group that can hold a column at the
-  // specified flow thread block offset.
-  bool hasFragmentainerGroupForColumnAt(LayoutUnit bottomOffsetInFlowThread,
-                                        PageBoundaryRule) const;
+  // Return true if we need to create additional fragmentainer group(s) to hold
+  // a column at the specified flow thread block offset.
+  bool needsNewFragmentainerGroupAt(LayoutUnit bottomOffsetInFlowThread,
+                                    PageBoundaryRule) const;
 
   MultiColumnFragmentainerGroup& appendNewFragmentainerGroup();
 
   // Logical top relative to the content edge of the multicol container.
   LayoutUnit logicalTopFromMulticolContentEdge() const;
 
   LayoutUnit logicalTopInFlowThread() const;
   LayoutUnit logicalBottomInFlowThread() const;
   LayoutUnit logicalHeightInFlowThread() const {
     // Due to negative margins, logical bottom may actually end up above logical
@@ skipping 118 matching lines @@
   LayoutUnit m_oldLogicalTop;
 
   bool m_initialHeightCalculated;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutMultiColumnSet, isLayoutMultiColumnSet());
 
 }  // namespace blink
 
 #endif  // LayoutMultiColumnSet_h