Adding WebFallbackFont and renaming SimpleFontFamily

Source/platform/fonts/win/FontCacheSkiaWin.cpp

Index: Source/platform/fonts/win/FontCacheSkiaWin.cpp
diff --git a/Source/platform/fonts/win/FontCacheSkiaWin.cpp b/Source/platform/fonts/win/FontCacheSkiaWin.cpp
index 01063dd7154773c60a8c242e54a9d00ac598eaaa..c1bc264f0e65f1cb154de84c78d7bf0f2c265027 100644
--- a/Source/platform/fonts/win/FontCacheSkiaWin.cpp
+++ b/Source/platform/fonts/win/FontCacheSkiaWin.cpp
@@ -85,7 +85,7 @@ static bool fontContainsCharacter(const FontPlatformData* fontData, const wchar_
 
 // Given the desired base font, this will create a SimpleFontData for a specific
 // font that can be used to render the given range of characters.
-PassRefPtr<SimpleFontData> FontCache::platformFallbackForCharacter(const FontDescription& fontDescription, UChar32 character, const SimpleFontData*)
+PassRefPtr<SimpleFontData> FontCache::fallbackFontForCharacter(const FontDescription& fontDescription, UChar32 character, const SimpleFontData*)
 {
     // FIXME: Consider passing fontDescription.dominantScript()
     // to GetFallbackFamily here.