Do not specify language for font fallback

Source/platform/fonts/skia/FontCacheSkia.cpp

 /*
  * Copyright (c) 2006, 2007, 2008, 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 78 matching lines @@
 {
     // First try the specified font with standard style & weight.
     if (fontDescription.style() == FontStyleItalic
         || fontDescription.weight() >= FontWeight600) {
         RefPtr<SimpleFontData> fontData = fallbackOnStandardFontStyle(
             fontDescription, c);
         if (fontData)
             return fontData;
     }
 
-    icu::Locale locale = icu::Locale::getDefault();
     FontCache::PlatformFallbackFont fallbackFont;
-    FontCache::getFontForCharacter(c, locale.getLanguage(), &fallbackFont);
+    FontCache::getFontForCharacter(c, "", &fallbackFont);
     if (fallbackFont.name.isEmpty())
         return nullptr;
 
     FontFaceCreationParams creationParams;
     creationParams = FontFaceCreationParams(fallbackFont.filename, fallbackFont.fontconfigInterfaceId, fallbackFont.ttcIndex);
 
     // Changes weight and/or italic of given FontDescription depends on
     // the result of fontconfig so that keeping the correct font mapping
     // of the given character. See http://crbug.com/32109 for details.
     bool shouldSetSyntheticBold = false;
@@ skipping 103 matching lines @@
         fontSize,
         (fontDescription.weight() >= FontWeight600 && !tf->isBold()) || fontDescription.isSyntheticBold(),
         (fontDescription.style() && !tf->isItalic()) || fontDescription.isSyntheticItalic(),
         fontDescription.orientation(),
         fontDescription.useSubpixelPositioning());
     return result;
 }
 #endif // !OS(WIN)
 
 } // namespace WebCore