Win: Fix race possible during startup before first Browser is created.

chrome/browser/process_singleton_win.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 "chrome/browser/process_singleton.h"
 
 #include "app/l10n_util.h"
 #include "app/win_util.h"
 #include "base/base_paths.h"
 #include "base/command_line.h"
@@ skipping 182 matching lines @@
 
   win_util::SetWindowUserData(window_, this);
   return true;
 }
 
 void ProcessSingleton::Cleanup() {
 }
 
 LRESULT ProcessSingleton::OnCopyData(HWND hwnd, const COPYDATASTRUCT* cds) {
   // If locked, it means we are not ready to process this message because
-  // we are probably in a first run critical phase. We must do this before
-  // doing the IsShuttingDown() check since that returns true during first run
-  // (since g_browser_process hasn't been AddRefModule()d yet).
+  // we are probably in a first run critical phase.
   if (locked_) {
     // Attempt to place ourselves in the foreground / flash the task bar.
     if (IsWindow(foreground_window_))
       SetForegroundWindow(foreground_window_);
     return TRUE;
   }
 
   // Ignore the request if the browser process is already in shutdown path.
   if (!g_browser_process || g_browser_process->IsShuttingDown()) {
     LOG(WARNING) << "Not handling WM_COPYDATA as browser is shutting down";
@@ skipping 78 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);
 }