Moving GraphicsContext and dependencies from core to platform.

Source/platform/fonts/FontFallbackList.h

Index: Source/platform/fonts/FontFallbackList.h
diff --git a/Source/core/platform/graphics/FontFallbackList.h b/Source/platform/fonts/FontFallbackList.h
similarity index 96%
rename from Source/core/platform/graphics/FontFallbackList.h
rename to Source/platform/fonts/FontFallbackList.h
index 5964bba4128aa58e696e03f6396bddbaea8b3e64..71fb526cc3e57733de08b174dfd764166710ee2f 100644
--- a/Source/core/platform/graphics/FontFallbackList.h
+++ b/Source/platform/fonts/FontFallbackList.h
@@ -21,8 +21,8 @@
 #ifndef FontFallbackList_h
 #define FontFallbackList_h
 
-#include "core/platform/graphics/SimpleFontData.h"
 #include "platform/fonts/FontSelector.h"
+#include "platform/fonts/SimpleFontData.h"
 #include "platform/fonts/WidthCache.h"
 #include "wtf/Forward.h"
 #include "wtf/MainThread.h"
@@ -38,7 +38,7 @@ class FontSelector;
 
 const int cAllFamiliesScanned = -1;
 
-class FontFallbackList : public RefCounted<FontFallbackList> {
+class PLATFORM_EXPORT FontFallbackList : public RefCounted<FontFallbackList> {
     WTF_MAKE_NONCOPYABLE(FontFallbackList);
 public:
     typedef HashMap<int, GlyphPageTreeNode*, DefaultHash<int>::Hash> GlyphPages;