Replace ENABLE_OPENTYPE_VERTICAL implementation with HarfBuzz

Source/platform/fonts/GlyphPageTreeNode.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 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
@@ skipping 103 matching lines @@
             it->value->pruneFontData(fontData);
     }
 
     if (pageZeroRoot)
         pageZeroRoot->pruneFontData(fontData);
 }
 
 static bool fill(GlyphPage* pageToFill, unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData)
 {
     bool hasGlyphs = fontData->fillGlyphPage(pageToFill, offset, length, buffer, bufferLength);
-#if ENABLE(OPENTYPE_VERTICAL)
-    if (hasGlyphs && fontData->verticalData())
-        fontData->verticalData()->substituteWithVerticalGlyphs(fontData, pageToFill, offset, length);
-#endif
     return hasGlyphs;
 }
 
 void GlyphPageTreeNode::initializePage(const FontData* fontData, unsigned pageNumber)
 {
     ASSERT(!m_page);
 
     // This function must not be called for the root of the tree, because that
     // level does not contain any glyphs.
     ASSERT(m_level > 0 && m_parent);
@@ skipping 247 matching lines @@
     if (level > fontData->maxGlyphPageTreeLevel())
         return;
 
     GlyphPageTreeNodeMap::iterator end = m_children.end();
     for (GlyphPageTreeNodeMap::iterator it = m_children.begin(); it != end; ++it)
         it->value->pruneFontData(fontData, level);
 }
 
 } // namespace blink