Minor fix to fix building without ENABLE_LOGGING_AND_PROFILING defined.

src/log.cc

 // Copyright 2006-2008 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 661 matching lines @@
 #ifdef ENABLE_LOGGING_AND_PROFILING
   if (logfile_ == NULL || !FLAG_log) return;
   LogMessageBuilder msg;
   msg.Append("delete,%s,0x%x\n", name,
              reinterpret_cast<unsigned int>(object));
   msg.WriteToLogFile();
 #endif
 }
 
 
+#ifdef ENABLE_LOGGING_AND_PROFILING
 int Logger::CodeObjectSize(Code* code) {
   // Check that the assumptions about the layout of the code object holds.
   ASSERT_EQ(reinterpret_cast<unsigned int>(code->instruction_start()) -
             reinterpret_cast<unsigned int>(code->address()),
             Code::kHeaderSize);
   return code->instruction_size() + Code::kHeaderSize;
 }
+#endif
 
 
 void Logger::CodeCreateEvent(const char* tag, Code* code, const char* comment) {
 #ifdef ENABLE_LOGGING_AND_PROFILING
   if (logfile_ == NULL || !FLAG_log_code) return;
   LogMessageBuilder msg;
   msg.Append("code-creation,%s,0x%x,%d,\"", tag,
              reinterpret_cast<unsigned int>(code->address()),
              CodeObjectSize(code));
   for (const char* p = comment; *p != '\0'; p++) {
@@ skipping 429 matching lines @@
   if (FLAG_log_state_changes) {
     LOG(UncheckedStringEvent("Leaving", StateToString(state_)));
     if (previous_) {
       LOG(UncheckedStringEvent("To", StateToString(previous_->state_)));
     }
   }
 }
 #endif
 
 } }  // namespace v8::internal