Backport the changes from the readability.

src/disasm-ia32.cc

 // 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 1077 matching lines @@
 
 const char* NameConverter::NameInCode(byte* addr) const {
   // IA32 does not embed debug strings at the moment.
   UNREACHABLE();
   return "";
 }
 
 
 //------------------------------------------------------------------------------
 
-static NameConverter defaultConverter;
-
-Disassembler::Disassembler() : converter_(defaultConverter) {}
-
-
 Disassembler::Disassembler(const NameConverter& converter)
     : converter_(converter) {}
 
 
 Disassembler::~Disassembler() {}
 
 
 int Disassembler::InstructionDecode(v8::internal::Vector<char> buffer,
                                     byte* instruction) {
   DisassemblerIA32 d(converter_, false /*do not crash if unimplemented*/);
   return d.InstructionDecode(buffer, instruction);
 }
 
 
 // The IA-32 assembler does not currently use constant pools.
 int Disassembler::ConstantPoolSizeAt(byte* instruction) { return -1; }
 
 
 /*static*/ void Disassembler::Disassemble(FILE* f, byte* begin, byte* end) {
-  Disassembler d;
+  NameConverter converter;
+  Disassembler d(converter);
   for (byte* pc = begin; pc < end;) {
     v8::internal::EmbeddedVector<char, 128> buffer;
     buffer[0] = '\0';
     byte* prev_pc = pc;
     pc += d.InstructionDecode(buffer, pc);
     fprintf(f, "%p", prev_pc);
     fprintf(f, "    ");
 
     for (byte* bp = prev_pc; bp < pc; bp++) {
       fprintf(f, "%02x",  *bp);
     }
     for (int i = 6 - (pc - prev_pc); i >= 0; i--) {
       fprintf(f, "  ");
     }
     fprintf(f, "  %s\n", buffer.start());
   }
 }
 
 
 }  // namespace disasm