[FastTextAutosizer] Refactor for understandability

Source/core/rendering/FastTextAutosizer.h

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 194 matching lines @@
     float superclusterMultiplier(Cluster*);
     // A cluster's width provider is typically the deepest block containing all text.
     // There are exceptions, such as tables and table cells which use the table itself for width.
     const RenderBlock* clusterWidthProvider(const RenderBlock*);
     // Typically this returns a block's computed width. In the case of tables layout, this
     // width is not yet known so the fixed width is used if it's available, or the containing
     // block's width otherwise.
     float widthFromBlock(const RenderBlock*);
     float multiplierFromBlock(const RenderBlock*);
     void applyMultiplier(RenderObject*, float);
-    bool mightBeWiderOrNarrowerDescendant(const RenderBlock*);
     bool isWiderOrNarrowerDescendant(Cluster*);
     bool isLayoutRoot(const RenderBlock*) const;
 
     Cluster* currentCluster() const;
 
     RenderObject* nextChildSkippingChildrenOfBlocks(const RenderObject*, const RenderObject*);
 
     const RenderBlock* deepestBlockContainingAllText(Cluster*);
     const RenderBlock* deepestBlockContainingAllText(const RenderBlock*);
     // Returns the first text leaf that is in the current cluster. We attempt to not include text
@@ skipping 16 matching lines @@
     // cluster root. Clusters whose roots share the same fingerprint use the
     // same multiplier.
     SuperclusterMap m_superclusters;
     ClusterStack m_clusterStack;
     FingerprintMapper m_fingerprintMapper;
 };
 
 } // namespace WebCore
 
 #endif // FastTextAutosizer_h