[Mac] Do not post NSApplicationWillTerminateNotification via a task, do it immediately.

chrome/browser/lifetime/application_lifetime_mac.mm

 // 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.
 
 // This file contains the penultimate pieces of the Mac shutdown puzzle. For
 // an in-depth overview of the Mac shutdown path, see the comment above
 // -[BrowserCrApplication terminate:].
 
 #include "chrome/browser/lifetime/application_lifetime.h"
 
-#include "base/bind.h"
-#include "base/message_loop.h"
+#include "base/logging.h"
 #include "chrome/browser/browser_shutdown.h"
 #import "chrome/browser/chrome_browser_application_mac.h"
 
 namespace browser {
 
-namespace {
+// At this point, the user is trying to quit (or the system is forcing the
+// application to quit) and all browsers have been successfully closed. The
+// final step in shutdown is to post the NSApplicationWillTerminateNotification
+// to end the -[NSApplication run] event loop.
+void HandleAppExitingForPlatform() {
+  static bool kill_me_now = false;
+  CHECK(!kill_me_now);
+  kill_me_now = true;
 
-// A closure that is used to finalize application shutdown.
-void PerformTerminate() {
   [[NSNotificationCenter defaultCenter]
       postNotificationName:NSApplicationWillTerminateNotification
                     object:NSApp];
 }
 
-}  // namespace
-
-// At this point, the user is trying to quit (or the system is forcing the
-// application to quit) and all browsers have been successfully closed. The
-// final step in shutdown is to post the NSApplicationWillTerminateNotification
-// to end the -[NSApplication run] event loop. That is performed via the
-// MessageLoop, since this can be called via the destruction path of the last
-// Browser object.
-void HandleAppExitingForPlatform() {
-  static bool kill_me_now = false;
-  CHECK(!kill_me_now);
-  kill_me_now = true;
-
-  MessageLoop::current()->PostNonNestableTask(FROM_HERE,
-      base::Bind(&PerformTerminate));
-}
-
 }  // namespace browser