Refactor shutdown code to allow win/linux to run after last browser closes.

chrome/browser/browser_main_mac.mm

 // 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_main.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "app/app_switches.h"
 #include "app/l10n_util_mac.h"
@@ skipping 59 matching lines @@
 
   // Prevent Cocoa from turning command-line arguments into
   // |-application:openFiles:|, since we already handle them directly.
   [[NSUserDefaults standardUserDefaults]
       setObject:@"NO" forKey:@"NSTreatUnknownArgumentsAsOpen"];
 }
 
 void DidEndMainMessageLoop() {
   AppController* appController = [NSApp delegate];
   [appController didEndMainMessageLoop];
-  NotificationService::current()->Notify(NotificationType::APP_TERMINATING,
-                                         NotificationService::AllSources(),
-                                         NotificationService::NoDetails());
 }
 
 void RecordBreakpadStatusUMA(MetricsService* metrics) {
   metrics->RecordBreakpadRegistration(IsCrashReporterEnabled());
   metrics->RecordBreakpadHasDebugger(DebugUtil::BeingDebugged());
 }
 
 void WarnAboutMinimumSystemRequirements() {
   // Nothing to check for on Mac right now.
 }
 
 // From browser_main_win.h, stubs until we figure out the right thing...
 
 int DoUninstallTasks(bool chrome_still_running) {
   return ResultCodes::NORMAL_EXIT;
 }
 
 int HandleIconsCommands(const CommandLine& parsed_command_line) {
   return 0;
 }
 
 bool CheckMachineLevelInstall() {
   return false;
 }
 
 void PrepareRestartOnCrashEnviroment(const CommandLine& parsed_command_line) {
 }