Moving GraphicsContext and dependencies from core to platform.

Source/platform/fonts/FontCache.h

 /*
  * Copyright (C) 2006, 2008 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2007-2008 Torch Mobile, Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 13 matching lines @@
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef FontCache_h
 #define FontCache_h
 
 #include <limits.h>
+#include "platform/PlatformExport.h"
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/WTFString.h"
 #include "wtf/unicode/Unicode.h"
 
 #if OS(WIN)
 #include <windows.h>
@@ skipping 12 matching lines @@
 class FontPlatformData;
 class FontData;
 class FontDescription;
 class FontSelector;
 class OpenTypeVerticalData;
 class SimpleFontData;
 
 enum ShouldRetain { Retain, DoNotRetain };
 enum PurgeSeverity { PurgeIfNeeded, ForcePurge };
 
-class FontCache {
+class PLATFORM_EXPORT FontCache {
     friend class FontCachePurgePreventer;
 
     WTF_MAKE_NONCOPYABLE(FontCache); WTF_MAKE_FAST_ALLOCATED;
 public:
-    friend FontCache* fontCache();
+    static FontCache* fontCache();
 
     void releaseFontData(const SimpleFontData*);
 
     // This method is implemented by the plaform and used by
     // FontFastPath to lookup the font for a given character.
     PassRefPtr<SimpleFontData> platformFallbackForCharacter(const FontDescription&, UChar32, const SimpleFontData* fontDataToSubstitute, bool disallowSynthetics);
 
     // Also implemented by the platform.
     void platformInit();
 
@@ skipping 61 matching lines @@
     bool m_useSubpixelPositioning;
 #endif
 
 #if OS(MACOSX) || OS(ANDROID)
     friend class ComplexTextController;
 #endif
     friend class SimpleFontData; // For fontDataFromFontPlatformData
     friend class FontFallbackList;
 };
 
-// Get the global fontCache.
-FontCache* fontCache();
-
-class FontCachePurgePreventer {
+class PLATFORM_EXPORT FontCachePurgePreventer {
 public:
-    FontCachePurgePreventer() { fontCache()->disablePurging(); }
-    ~FontCachePurgePreventer() { fontCache()->enablePurging(); }
+    FontCachePurgePreventer() { FontCache::fontCache()->disablePurging(); }
+    ~FontCachePurgePreventer() { FontCache::fontCache()->enablePurging(); }
 };
 
 }
 
 #endif