[New Multicolumn] Remove the term "balancing" from some member names.

Source/core/rendering/RenderMultiColumnSet.h

Index: Source/core/rendering/RenderMultiColumnSet.h
diff --git a/Source/core/rendering/RenderMultiColumnSet.h b/Source/core/rendering/RenderMultiColumnSet.h
index 57b09aa1136649e8c7f6369f2307dd737150b68e..d3762326679951e9a78b304bfedce69cbb4aadb7 100644
--- a/Source/core/rendering/RenderMultiColumnSet.h
+++ b/Source/core/rendering/RenderMultiColumnSet.h
@@ -91,7 +91,7 @@ public:
     // (Re-)calculate the column height when contents are supposed to be balanced. If 'initial' is

[Julien - ping for review, 2014/05/05 21:49:19]

This comment still mentions that the content needs to be balanced.

[mstensho (USE GERRIT), 2014/05/06 07:43:18]

Done.

     // set, guess an initial column height; otherwise, stretch the column height a tad. Return true
     // if column height changed and another layout pass is required.
-    bool recalculateBalancedHeight(bool initial);
+    bool recalculateColumnHeight(bool initial);
 
     // Record space shortage (the amount of space that would have been enough to prevent some
     // element from being moved to the next column) at a column break. The smallest amount of space
@@ -150,7 +150,7 @@ private:
     // and store the results. This is needed in order to balance the columns.
     void distributeImplicitBreaks();
 
-    LayoutUnit calculateBalancedHeight(bool initial) const;
+    LayoutUnit calculateColumnHeight(bool initial) const;
 
     unsigned m_computedColumnCount; // Used column count (the resulting 'N' from the pseudo-algorithm in the multicol spec)
     LayoutUnit m_computedColumnWidth; // Used column width (the resulting 'W' from the pseudo-algorithm in the multicol spec)