Remove Mac native font type members from FontPlatformData

Source/platform/fonts/FontCustomPlatformData.cpp

 /*
  * Copyright (C) 2007 Apple Computer, Inc.
  * Copyright (c) 2007, 2008, 2009, Google Inc. All rights reserved.
  * Copyright (C) 2010 Company 100, Inc.
  *
  * 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
@@ skipping 26 matching lines @@
 #include "platform/SharedBuffer.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/fonts/FontPlatformData.h"
 #include "platform/fonts/opentype/OpenTypeSanitizer.h"
 #include "third_party/skia/include/core/SkStream.h"
 #include "third_party/skia/include/core/SkTypeface.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
-FontCustomPlatformData::FontCustomPlatformData(PassRefPtr<SkTypeface> typeface)
-    : m_typeface(typeface)
-{
-}
-
 FontCustomPlatformData::~FontCustomPlatformData()
 {
 }
 
 FontPlatformData FontCustomPlatformData::fontPlatformData(float size, bool bold, bool italic, FontOrientation orientation)
 {
     ASSERT(m_typeface);
 #if OS(WIN)
     if (!FontCache::useDirectWrite()) {
         // FIXME: Skia currently renders synthetic bold and italics with
@@ skipping 46 matching lines @@
 
     return adoptPtr(new FontCustomPlatformData(typeface.release()));
 }
 
 bool FontCustomPlatformData::supportsFormat(const String& format)
 {
     return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype") || OpenTypeSanitizer::supportsFormat(format);
 }
 
 } // namespace blink