Adding WebFallbackFont and renaming SimpleFontFamily

Source/platform/fonts/mac/FontCacheMac.mm

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 82 matching lines @@
         12, // FontWeight900
     };
     return appKitFontWeights[fontWeight];
 }
 
 static inline bool isAppKitFontWeightBold(NSInteger appKitFontWeight)
 {
     return appKitFontWeight >= 7;
 }
 
-PassRefPtr<SimpleFontData> FontCache::platformFallbackForCharacter(const FontDescription& fontDescription, UChar32 character, const SimpleFontData* fontDataToSubstitute)
+PassRefPtr<SimpleFontData> FontCache::fallbackFontForCharacter(const FontDescription& fontDescription, UChar32 character, const SimpleFontData* fontDataToSubstitute)
 {
     // FIXME: We should fix getFallbackFamily to take a UChar32
     // and remove this split-to-UChar16 code.
     UChar codeUnits[2];
     int codeUnitsLength;
     if (character <= 0xFFFF) {
         codeUnits[0] = character;
         codeUnitsLength = 1;
     } else {
         codeUnits[0] = U16_LEAD(character);
@@ skipping 109 matching lines @@
 
     // FontPlatformData::font() can be null for the case of Chromium out-of-process font loading.
     // In that case, we don't want to use the platformData.
     OwnPtr<FontPlatformData> platformData = adoptPtr(new FontPlatformData(platformFont, size, syntheticBold, syntheticOblique, fontDescription.orientation(), fontDescription.widthVariant()));
     if (!platformData->font())
         return 0;
     return platformData.leakPtr();
 }
 
 } // namespace WebCore