Calculate minimum column height after layout.

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MultiColumnFragmentainerGroup_h
 #define MultiColumnFragmentainerGroup_h
 
 #include "core/layout/LayoutMultiColumnFlowThread.h"
 #include "wtf/Allocator.h"
 
@@ skipping 43 matching lines @@
 
     // The bottom of our flow thread portion
     LayoutUnit logicalBottomInFlowThread() const { return m_logicalBottomInFlowThread; }
     void setLogicalBottomInFlowThread(LayoutUnit logicalBottomInFlowThread) { ASSERT(logicalBottomInFlowThread >= m_logicalTopInFlowThread); m_logicalBottomInFlowThread = logicalBottomInFlowThread; }
 
     // The height of our flow thread portion
     LayoutUnit logicalHeightInFlowThread() const { return m_logicalBottomInFlowThread - m_logicalTopInFlowThread; }
 
     bool heightIsAuto() const;
     void resetColumnHeight();
-    void updateMinimumColumnHeight(LayoutUnit height) { m_minimumColumnHeight = std::max(height, m_minimumColumnHeight); }
     bool recalculateColumnHeight(BalancedColumnHeightCalculation calculationMode);
 
     LayoutSize flowThreadTranslationAtOffset(LayoutUnit offsetInFlowThread) const;
     LayoutUnit columnLogicalTopForOffset(LayoutUnit offsetInFlowThread) const;
     LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) const;
     LayoutRect fragmentsBoundingBox(const LayoutRect& boundingBoxInFlowThread) const;
 
     void collectLayerFragments(PaintLayerFragments&, const LayoutRect& layerBoundingBox, const LayoutRect& dirtyRect) const;
     LayoutRect calculateOverflow() const;
 
@@ skipping 31 matching lines @@
     void columnIntervalForVisualRect(const LayoutRect&, unsigned& firstColumn, unsigned& lastColumn) const;
 
     LayoutMultiColumnSet& m_columnSet;
 
     LayoutUnit m_logicalTop;
     LayoutUnit m_logicalTopInFlowThread;
     LayoutUnit m_logicalBottomInFlowThread;
 
     LayoutUnit m_columnHeight;
 
-    // The following variables are used when balancing the column set.
     LayoutUnit m_maxColumnHeight; // Maximum column height allowed.
-    LayoutUnit m_minimumColumnHeight;
 };
 
 // List of all fragmentainer groups within a column set. There will always be at least one
 // group. Deleting the one group is not allowed (or possible). There will be more than one group if
 // the owning column set lives in multiple outer fragmentainers (e.g. multicol inside paged media).
 class CORE_EXPORT MultiColumnFragmentainerGroupList {
     DISALLOW_NEW();
 public:
     MultiColumnFragmentainerGroupList(LayoutMultiColumnSet&);
     ~MultiColumnFragmentainerGroupList();
@@ skipping 26 matching lines @@
 
 private:
     LayoutMultiColumnSet& m_columnSet;
 
     Vector<MultiColumnFragmentainerGroup, 1> m_groups;
 };
 
 } // namespace blink
 
 #endif // MultiColumnFragmentainerGroup_h