Reland r172943 "Make CSSFontFace::willUseFontData() load fonts with unicode-range"

Source/platform/fonts/FontSelector.h

Index: Source/platform/fonts/FontSelector.h
diff --git a/Source/platform/fonts/FontSelector.h b/Source/platform/fonts/FontSelector.h
index 91523b23670b6dd9a9548e4476b0f3f7b185beb5..5c0db42ad1d585d9dbaf7a4f0880434786d94eb0 100644
--- a/Source/platform/fonts/FontSelector.h
+++ b/Source/platform/fonts/FontSelector.h
@@ -29,6 +29,7 @@
 #include "platform/fonts/FontCacheClient.h"
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
+#include "wtf/text/AtomicString.h"
 
 namespace WebCore {
 
@@ -39,7 +40,7 @@ class FontSelector : public FontCacheClient {
 public:
     virtual ~FontSelector() { }
     virtual PassRefPtr<FontData> getFontData(const FontDescription&, const AtomicString& familyName) = 0;
-    virtual void willUseFontData(const FontDescription&, const AtomicString& familyName) = 0;
+    virtual void willUseFontData(const FontDescription&, const AtomicString& familyName, UChar32) = 0;
 
     virtual unsigned version() const = 0;
 };