Allow overriding of X error functions

chrome/browser/browser_shutdown.cc

 // Copyright (c) 2010 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/browser_shutdown.h"
 
 #include <string>
 
 #include "app/resource_bundle.h"
 #include "base/command_line.h"
@@ skipping 271 matching lines @@
 }
 
 void SetTryingToQuit(bool quitting) {
   g_trying_to_quit = quitting;
 }
 
 bool IsTryingToQuit() {
   return g_trying_to_quit;
 }
 
+bool ShuttingDownWithoutClosingBrowsers() {
+#if defined(USE_X11)
+  if (GetShutdownType() == browser_shutdown::END_SESSION)
+    return true;
+#endif
+  return false;
+}
+
 }  // namespace browser_shutdown