Add simple trace logging of received IPC messages

chrome/tools/ipclist/ipclist.cc

 // Copyright (c) 2011 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 once to get the type definitions
@@ skipping 20 matching lines @@
 #include "chrome/common/all_messages.h"
 };
 #define MSGTABLE_SIZE (sizeof(msgtable)/sizeof(msgtable[0]))
 
 static bool check_msgtable() {
   bool result = true;
   int previous_class_id = 0;
   int highest_class_id = 0;
   std::vector<int> exemptions;
 
-  // Exclude test files from consideration.  Do not include message
-  // files used inside the actual chrome browser in this list.
+  // Exclude test and other non-browser files from consideration.  Do not
+  // include message files used inside the actual chrome browser in this list.
   exemptions.push_back(TestMsgStart);
   exemptions.push_back(FirefoxImporterUnittestMsgStart);
+  exemptions.push_back(ShellMsgStart);
 
   for (size_t i = 0; i < MSGTABLE_SIZE; ++i) {
     int class_id = IPC_MESSAGE_ID_CLASS(msgtable[i].id);
     if (class_id >= LastIPCMsgStart) {
       std::cout << "Invalid LastIPCMsgStart setting\n";
       result = false;
     }
     while (class_id > previous_class_id + 1) {
       std::vector<int>::iterator iter;
       iter = find(exemptions.begin(), exemptions.end(), previous_class_id+1);
       if (iter == exemptions.end()) {
         std::cout << "Missing message file: gap before " << class_id << "\n";
         result = false;
         break;
       }
       ++previous_class_id;
     }
     previous_class_id = class_id;
     if (class_id > highest_class_id)
       highest_class_id = class_id;
   }
 
-  if (LastIPCMsgStart > highest_class_id + 1) {
+  while (LastIPCMsgStart > highest_class_id + 1) {
+    std::vector<int>::iterator iter;
+    iter = find(exemptions.begin(), exemptions.end(), highest_class_id+1);
+    if (iter == exemptions.end()) {
       std::cout << "Missing message file: gap before LastIPCMsgStart\n";
       result = false;
+      break;
+    }
+    ++highest_class_id;
   }
 
   if (!result)
     std::cout << "Please check chrome/common/all_messages.h.\n";
 
   return result;
 }
 
 static void dump_msgtable(bool show_args, bool show_ids,
                           bool show_comma, const char *prefix) {
@@ skipping 53 matching lines @@
 
   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;
 }