Simplify GlyphBuffer::reverse.

Source/platform/fonts/Font.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 630 matching lines @@
 
     if (glyphBuffer.isEmpty())
         return 0;
 
     float afterWidth = it.m_runWidthSoFar;
 
     if (runInfo.run.rtl()) {
         float finalRoundingWidth = it.m_finalRoundingWidth;
         it.advance(runInfo.run.length(), &localGlyphBuffer);
         initialAdvance = finalRoundingWidth + it.m_runWidthSoFar - afterWidth;
-        glyphBuffer.reverse(0, glyphBuffer.size());
+        glyphBuffer.reverse();
     } else {
         initialAdvance = beforeWidth;
     }
 
     return initialAdvance;
 }
 
 void Font::drawSimpleText(GraphicsContext* context, const TextRunPaintInfo& runInfo, const FloatPoint& point) const
 {
     // This glyph buffer holds our glyphs+advances+font data for each glyph.
@@ skipping 189 matching lines @@
                 if (delta <= 0)
                     break;
             }
         }
     }
 
     return offset;
 }
 
 }