When changing Ready Mode state from within an IE process, use chrome_launcher...

chrome_frame/chrome_launcher_main.cc

 // Copyright (c) 2009 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 <windows.h>
 #include <DbgHelp.h>
 #include <string>
 
 #include "chrome_frame/chrome_launcher.h"
 #include "chrome_frame/crash_server_init.h"
-
+#include "chrome_frame/update_launcher.h"
 
 int APIENTRY wWinMain(HINSTANCE, HINSTANCE, wchar_t*, int) {
   const wchar_t* cmd_line = ::GetCommandLine();
 
   google_breakpad::scoped_ptr<google_breakpad::ExceptionHandler> breakpad(
       InitializeCrashReporting(cmd_line));
 
+  std::wstring update_command =
+      update_launcher::GetUpdateCommandFromArguments(cmd_line);

[robertshield, 2011/01/24 15:08:42]

Nit: prefer constructor syntax:

std::wstring update_command(
    update_launcher::GetUpdateCommandFromArguments(cmd_line));

[erikwright (departed), 2011/01/24 17:17:14]

Done.

+
   UINT exit_code = ERROR_FILE_NOT_FOUND;
-  if (chrome_launcher::SanitizeAndLaunchChrome(::GetCommandLine())) {
+
+  if (!update_command.empty())
+    exit_code = update_launcher::LaunchUpdateCommand(update_command);
+  else if (chrome_launcher::SanitizeAndLaunchChrome(cmd_line))
     exit_code = ERROR_SUCCESS;
-  }
 
   return exit_code;
 }