Moving GraphicsContext and dependencies from core to platform.

Source/platform/fonts/FontPlatformData.h

Index: Source/platform/fonts/FontPlatformData.h
diff --git a/Source/core/platform/graphics/FontPlatformData.h b/Source/platform/fonts/FontPlatformData.h
similarity index 96%
rename from Source/core/platform/graphics/FontPlatformData.h
rename to Source/platform/fonts/FontPlatformData.h
index e0a1176bee398643fd5a47f847d08b2935c2937a..062a67f85b3e35cc686c9c4601cbad74cbdd2bba 100644
--- a/Source/core/platform/graphics/FontPlatformData.h
+++ b/Source/platform/fonts/FontPlatformData.h
@@ -24,15 +24,16 @@
 
 // FIXME: This is temporary until all ports switch to using this file.
 #if OS(WIN)
-#include "core/platform/graphics/win/FontPlatformDataWin.h"
+#include "platform/fonts/win/FontPlatformDataWin.h"
 #elif !OS(MACOSX)
-#include "core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h"
+#include "platform/fonts/harfbuzz/FontPlatformDataHarfBuzz.h"
 
 #else
 
 #ifndef FontPlatformData_h
 #define FontPlatformData_h
 
+#include "platform/PlatformExport.h"
 #include "platform/fonts/FontOrientation.h"
 #include "platform/fonts/FontWidthVariant.h"
 
@@ -54,7 +55,7 @@ typedef const struct __CTFont* CTFontRef;
 #include "wtf/text/StringImpl.h"
 
 #if OS(MACOSX)
-#include "core/platform/graphics/mac/MemoryActivatedFont.h"
+#include "platform/fonts/mac/MemoryActivatedFont.h"
 #endif
 
 #if OS(MACOSX)
@@ -78,7 +79,7 @@ class HarfBuzzFace;
 inline CTFontRef toCTFontRef(NSFont *nsFont) { return reinterpret_cast<CTFontRef>(nsFont); }
 #endif
 
-class FontPlatformData {
+class PLATFORM_EXPORT FontPlatformData {
 public:
     FontPlatformData(WTF::HashTableDeletedValueType);
     FontPlatformData();