Enable Emoji Fitzpatrick modifier sequences

third_party/WebKit/Source/platform/fonts/Character.cpp

 /*
  * Copyright (C) 2014 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 172 matching lines @@
             if (!U16_IS_TRAIL(next))
                 continue;
 
             UChar32 supplementaryCharacter = U16_GET_SUPPLEMENTARY(c, next);
 
             if (supplementaryCharacter < 0x1F1E6) // U+1F1E6 through U+1F1FF Regional Indicator Symbols
                 continue;
             if (supplementaryCharacter <= 0x1F1FF)
                 return ComplexPath;
 
+            // Emoji Fitzpatrick modifiers trigger upgrade to complex path for shaping them.
+            if (supplementaryCharacter < 0x1F3FB)
+                continue;
+            if (supplementaryCharacter <= 0x1F3FF)
+                return ComplexPath;
+
             // Man and Woman Emojies,
             // in order to support emoji joiner combinations for family and couple pictographs.
             // Compare http://unicode.org/reports/tr51/#Emoji_ZWJ_Sequences
             if (supplementaryCharacter < 0x1F468)
                 continue;
             if (supplementaryCharacter <= 0x1F469)
                 return ComplexPath;
 
             if (supplementaryCharacter < 0xE0100) // U+E0100 through U+E01EF Unicode variation selectors.
                 continue;
@@ skipping 145 matching lines @@
 }
 
 bool Character::isCommonOrInheritedScript(UChar32 character)
 {
     UErrorCode status = U_ZERO_ERROR;
     UScriptCode script = uscript_getScript(character, &status);
     return U_SUCCESS(status) && (script == USCRIPT_COMMON || script == USCRIPT_INHERITED);
 }
 
 } // namespace blink