Moving GraphicsContext and dependencies from core to platform.

Source/platform/fonts/mac/FontCacheMac.mm

Index: Source/platform/fonts/mac/FontCacheMac.mm
diff --git a/Source/core/platform/graphics/mac/FontCacheMac.mm b/Source/platform/fonts/mac/FontCacheMac.mm
similarity index 97%
rename from Source/core/platform/graphics/mac/FontCacheMac.mm
rename to Source/platform/fonts/mac/FontCacheMac.mm
index 9389fc35556af62e01a043c0c822b103bc3b538e..ef8862c10067b78ed1e70e426fdb06014db97790 100644
--- a/Source/core/platform/graphics/mac/FontCacheMac.mm
+++ b/Source/platform/fonts/mac/FontCacheMac.mm
@@ -28,12 +28,12 @@
  */
 
 #import "config.h"
-#import "core/platform/graphics/FontCache.h"
+#import "platform/fonts/FontCache.h"
 
 #import <AppKit/AppKit.h>
-#import "core/platform/graphics/FontPlatformData.h"
-#import "core/platform/graphics/SimpleFontData.h"
 #import "platform/fonts/FontDescription.h"
+#import "platform/fonts/FontPlatformData.h"
+#import "platform/fonts/SimpleFontData.h"
 #import "platform/mac/WebFontCache.h"
 #import <wtf/MainThread.h>
 #import <wtf/StdLibExtras.h>
@@ -54,12 +54,12 @@ static void invalidateFontCache(void*)
         callOnMainThread(&invalidateFontCache, 0);
         return;
     }
-    fontCache()->invalidate();
+    FontCache::fontCache()->invalidate();
 }
 
 static void fontCacheRegisteredFontsChangedNotificationCallback(CFNotificationCenterRef, void* observer, CFStringRef name, const void *, CFDictionaryRef)
 {
-    ASSERT_UNUSED(observer, observer == fontCache());
+    ASSERT_UNUSED(observer, observer == FontCache::fontCache());
     ASSERT_UNUSED(name, CFEqual(name, kCTFontManagerRegisteredFontsChangedNotification));
     invalidateFontCache(0);
 }