Close notification windows while message loop is still active

chrome/browser/ui/browser_list_aura.cc

 // Copyright (c) 2012 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/ui/browser_list.h"
 
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/notifications/notification_ui_manager.h"
 
 // static
 void BrowserList::HandleAppExitingForPlatform() {
+  // Close All non browser windows now. Those includes notifications
+  // and windows created by Ash (launcher, background, etc).
+  g_browser_process->notification_ui_manager()->CancelAll();
+  // TODO(oshima): Close all non browser windows here while
+  // the message loop is still alive.
 #if defined(OS_CHROMEOS)
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableZeroBrowsersOpenForTests)) {
     // App is exiting, call EndKeepAlive() on behalf of Aura Shell.
     BrowserList::EndKeepAlive();
     // Make sure we have notified the session manager that we are exiting.
     // This might be called from FastShutdown() or CloseAllBrowsers(), but not
     // if something prevents a browser from closing before SetTryingToQuit()
     // gets called (e.g. browser->TabsNeedBeforeUnloadFired() is true).
     // NotifyAndTerminate does nothing if called more than once.
     BrowserList::NotifyAndTerminate(true);
   }
 #endif // OS_CHROMEOS
 }