Fix Hangul Tone Marks not to delimit in CachingWordShapeIterator

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

 /*
  * 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 45 matching lines @@
 
     static inline bool isUnicodeVariationSelector(UChar32 character)
     {
         // http://www.unicode.org/Public/UCD/latest/ucd/StandardizedVariants.html
         return isInRange(character, 0x180B, 0x180D) // MONGOLIAN FREE VARIATION SELECTOR ONE to THREE
             || isInRange(character, 0xFE00, 0xFE0F) // VARIATION SELECTOR-1 to 16
             || isInRange(character, 0xE0100, 0xE01EF); // VARIATION SELECTOR-17 to 256
     }
 
     static bool isCJKIdeographOrSymbol(UChar32);
+    static bool isCJKIdeographOrSymbolBase(UChar32 c)
+    {
+        return isCJKIdeographOrSymbol(c)
+            && !(U_GET_GC_MASK(c) & (U_GC_M_MASK | U_GC_LM_MASK | U_GC_SK_MASK));
+    }
 
     static unsigned expansionOpportunityCount(const LChar*, size_t length, TextDirection, bool& isAfterExpansion, const TextJustify);
     static unsigned expansionOpportunityCount(const UChar*, size_t length, TextDirection, bool& isAfterExpansion, const TextJustify);
     static unsigned expansionOpportunityCount(const TextRun& run, bool& isAfterExpansion)
     {
         if (run.is8Bit())
             return expansionOpportunityCount(run.characters8(), run.length(), run.direction(), isAfterExpansion, run.getTextJustify());
         return expansionOpportunityCount(run.characters16(), run.length(), run.direction(), isAfterExpansion, run.getTextJustify());
     }
 
@@ skipping 66 matching lines @@
 
     static String normalizeSpaces(const LChar*, unsigned length);
     static String normalizeSpaces(const UChar*, unsigned length);
 
     static bool isCommonOrInheritedScript(UChar32);
 };
 
 } // namespace blink
 
 #endif