Move blink::serializedCharacterData array to read-only data segment

third_party/WebKit/Source/platform/text/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 57 matching lines @@
   createUnicodeSet(name##Array, WTF_ARRAY_LENGTH(name##Array), name##Ranges, \
                    WTF_ARRAY_LENGTH(name##Ranges))
 
 #define RETURN_HAS_PROPERTY(c, name)            \
   static icu::UnicodeSet* unicodeSet = nullptr; \
   if (!unicodeSet)                              \
     unicodeSet = CREATE_UNICODE_SET(name);      \
   return unicodeSet->contains(c);
 #else
 // Freezed trie tree, see CharacterDataGenerator.cpp.
-extern int32_t serializedCharacterDataSize;
-extern uint8_t serializedCharacterData[];
+extern const int32_t serializedCharacterDataSize;
+extern const uint8_t serializedCharacterData[];
 
 static UTrie2* createTrie() {
   // Create a Trie from the value array.
   ICUError error;
   UTrie2* trie = utrie2_openFromSerialized(
       UTrie2ValueBits::UTRIE2_16_VALUE_BITS, serializedCharacterData,
       serializedCharacterDataSize, nullptr, &error);
   ASSERT(error == U_ZERO_ERROR);
   return trie;
 }
@@ skipping 164 matching lines @@
 }
 
 bool Character::isCommonOrInheritedScript(UChar32 character) {
   ICUError status;
   UScriptCode script = uscript_getScript(character, &status);
   return U_SUCCESS(status) &&
          (script == USCRIPT_COMMON || script == USCRIPT_INHERITED);
 }
 
 }  // namespace blink