Moving GraphicsContext and dependencies from core to platform.

Source/platform/fonts/CustomFontData.h

 /*
  * Copyright (C) 2013 Google, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef CustomFontData_h
 #define CustomFontData_h
 
+#include "platform/PlatformExport.h"
 #include "platform/fonts/Glyph.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include <unicode/uchar.h>
 
 namespace WebCore {
 
 class CSSFontFaceSource;
 struct GlyphData;
 class GlyphPage;
 class SimpleFontData;
 struct WidthIterator;
 
-class CustomFontData : public RefCounted<CustomFontData> {
+class PLATFORM_EXPORT CustomFontData : public RefCounted<CustomFontData> {
 public:
     static PassRefPtr<CustomFontData> create(bool isLoadingFallback = false)
     {
         return adoptRef(new CustomFontData(isLoadingFallback));
     }
 
     virtual ~CustomFontData() { }
 
     virtual void beginLoadIfNeeded() const { };
     bool isLoading() const { return m_isLoadingFallback && m_isUsed; }
@@ skipping 15 matching lines @@
     {
     }
 
     bool m_isLoadingFallback; // Whether or not this is a temporary font data for a custom font which is not yet loaded.
     mutable bool m_isUsed;
 };
 
 }
 
 #endif // CustomFontData_h