Restructure the ipc_fuzzer directory.

tools/ipc_fuzzer/message_tools/message_list.cc

 // Copyright 2014 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.
 
 #include <algorithm>
 #include <iostream>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 158 matching lines @@
       show_comma = true;
     } else if (std::string("--filter") == *argv) {
       filter = *(++argv);
       --argc;
     } else if (std::string("--ids") == *argv) {
       show_ids = true;
     } else if (std::string("--no-check") == *argv) {
       skip_check = true;
     } else {
       std::cout <<
-          "usage: ipclist [--args] [--ids] [--no-check] [--filter prefix] "
-          "[--comma]\n";
+          "usage: ipc_message_list [--args] [--ids] [--no-check] "
+          "[--filter prefix] [--comma]\n";
       return 1;
     }
   }
 
   std::sort(msgtable, msgtable + MSGTABLE_SIZE);
 
   if (!skip_check && check_msgtable() == false)
     return 1;
 
   dump_msgtable(show_args, show_ids, show_comma, filter);
   return 0;
 }