Revert 181541 "Merge FontPlatformDataHarfBuzz and FontPlatformData headers"

Source/platform/fonts/harfbuzz/HarfBuzzFaceCoreText.cpp

 /*
  * Copyright (c) 2012 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 115 matching lines @@
     // OpenType layout tables(GDEF, GSUB, GPOS). Use CGFontCopyTableForTag instead.
     hb_face_t* face = hb_face_create_for_tables(harfBuzzCoreTextGetTable, m_platformData->cgFont(), 0);
     ASSERT(face);
     return face;
 }
 
 hb_font_t* HarfBuzzFace::createFont()
 {
     hb_font_t* font = hb_font_create(m_face);
     hb_font_set_funcs(font, harfBuzzCoreTextGetFontFuncs(), m_platformData, 0);
-    const float size = m_platformData->m_textSize;
+    const float size = m_platformData->m_size;
     hb_font_set_ppem(font, size, size);
     const int scale = (1 << 16) * static_cast<int>(size);
     hb_font_set_scale(font, scale, scale);
     hb_font_make_immutable(font);
     return font;
 }
 
 } // namespace blink