Remove unnecessary includes of GlyphBuffer.h.

Source/platform/fonts/harfbuzz/HarfBuzzShaper.cpp

 /*
  * Copyright (c) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 BlackBerry Limited. 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.
@@ skipping 19 matching lines @@
  */
 
 #include "config.h"
 #include "platform/fonts/harfbuzz/HarfBuzzShaper.h"
 
 #include "hb.h"
 #include "platform/LayoutUnit.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/fonts/Character.h"
 #include "platform/fonts/Font.h"
+#include "platform/fonts/GlyphBuffer.h"
 #include "platform/fonts/harfbuzz/HarfBuzzFace.h"
 #include "platform/text/SurrogatePairAwareTextIterator.h"
 #include "platform/text/TextBreakIterator.h"
 #include "wtf/Compiler.h"
 #include "wtf/MathExtras.h"
 #include "wtf/unicode/Unicode.h"
 #include <unicode/normlzr.h>
 #include <unicode/uchar.h>
 #include <unicode/uscript.h>
 
@@ skipping 1072 matching lines @@
             point.x() + fromX, point.x() + toX,
             point.y(), height);
     }
 
     return Font::pixelSnappedSelectionRect(
         point.x() + toX, point.x() + fromX,
         point.y(), height);
 }
 
 } // namespace WebCore