Implement heap snapshots serialization into JSON. API is designed

src/unicode.h

 // Copyright 2007-2008 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 102 matching lines @@
   Data data_;
   unsigned length_;
 };
 
 class Utf8 {
  public:
   static inline uchar Length(uchar chr);
   static inline unsigned Encode(char* out, uchar c);
   static const byte* ReadBlock(Buffer<const char*> str, byte* buffer,
       unsigned capacity, unsigned* chars_read, unsigned* offset);
+  static uchar CalculateValue(const byte* str,
+                              unsigned length,
+                              unsigned* cursor);
   static const uchar kBadChar = 0xFFFD;
   static const unsigned kMaxEncodedSize   = 4;
   static const unsigned kMaxOneByteChar   = 0x7f;
   static const unsigned kMaxTwoByteChar   = 0x7ff;
   static const unsigned kMaxThreeByteChar = 0xffff;
   static const unsigned kMaxFourByteChar  = 0x1fffff;
 
  private:
   template <unsigned s> friend class Utf8InputBuffer;
   friend class Test;
   static inline uchar ValueOf(const byte* str,
                               unsigned length,
                               unsigned* cursor);
-  static uchar CalculateValue(const byte* str,
-                              unsigned length,
-                              unsigned* cursor);
 };
 
 // --- C h a r a c t e r   S t r e a m ---
 
 class CharacterStream {
  public:
   inline uchar GetNext();
   inline bool has_more() { return remaining_ != 0; }
   // Note that default implementation is not efficient.
   virtual void Seek(unsigned);
@@ skipping 122 matching lines @@
   static const int kMaxWidth = 1;
   static int Convert(uchar c,
                      uchar n,
                      uchar* result,
                      bool* allow_caching_ptr);
 };
 
 }  // namespace unibrow
 
 #endif  // V8_UNICODE_H_