Add an exception wrapper to the WindowProc functions so...

chrome/browser/process_singleton_win.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 "chrome/browser/process_singleton.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/scoped_handle.h"
+#include "base/win/wrapped_window_proc.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extensions_startup.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser_init.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/result_codes.h"
@@ skipping 147 matching lines @@
 // browser_main.cc we tolerate a second call which will do nothing.
 bool ProcessSingleton::Create() {
   DCHECK(!remote_window_);
   if (window_)
     return true;
 
   HINSTANCE hinst = GetModuleHandle(NULL);
 
   WNDCLASSEX wc = {0};
   wc.cbSize = sizeof(wc);
-  wc.lpfnWndProc = ProcessSingleton::WndProcStatic;
+  wc.lpfnWndProc =
+      base::win::WrappedWindowProc<ProcessSingleton::WndProcStatic>;
   wc.hInstance = hinst;
   wc.lpszClassName = chrome::kMessageWindowClass;
   ATOM clazz = RegisterClassEx(&wc);
   DCHECK(clazz);
 
   FilePath user_data_dir;
   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
 
   // Set the window's title to the path of our user data directory so other
   // Chrome instances can decide if they should forward to us or not.
@@ skipping 112 matching lines @@
   switch (message) {
     case WM_COPYDATA:
       return OnCopyData(reinterpret_cast<HWND>(wparam),
                         reinterpret_cast<COPYDATASTRUCT*>(lparam));
     default:
       break;
   }
 
   return ::DefWindowProc(hwnd, message, wparam, lparam);
 }