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

third_party/WebKit/Source/platform/text/CharacterPropertyDataGenerator.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // TODO(kojii): This file is compiled with $host_toolchain, which cannot find
 // include files in platform/fonts. The build scripts should include this
 // directory, and fix these #include's to "platform/fonts/...".
 #include "CharacterPropertyDataGenerator.h"
 
 #include "CharacterProperty.h"
@@ skipping 36 matching lines @@
   for (; begin != end; begin++) {
     assert(*begin <= kMaxCodepoint);
     values[*begin] |= value;
   }
 }
 
 static void generateUTrieSerialized(FILE* fp, int32_t size, uint8_t* array) {
   fprintf(fp,
           "#include <cstdint>\n\n"
           "namespace blink {\n\n"
-          "int32_t serializedCharacterDataSize = %d;\n"
-          "uint8_t serializedCharacterData[] = {",
+          "extern const int32_t serializedCharacterDataSize = %d;\n"
+          "extern const uint8_t serializedCharacterData[] = {",
           size);
   for (int32_t i = 0; i < size;) {
     fprintf(fp, "\n   ");
     for (int col = 0; col < 16 && i < size; col++, i++)
       fprintf(fp, " 0x%02X,", array[i]);
   }
   fprintf(fp,
           "\n};\n\n"
           "} // namespace blink\n");
 }
@@ skipping 55 matching lines @@
   if (argc <= 1) {
     generate(stdout);
   } else {
     FILE* fp = fopen(argv[1], "wb");
     generate(fp);
     fclose(fp);
   }
 
   return 0;
 }