Observe chrome::NOTIFICATION_APP_TERMINATING in Chrome's AppListViewDelegate

chrome/browser/signin/signin_manager_factory.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/signin/signin_manager_factory.h"
 
 #include "base/prefs/pref_registry_simple.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/chrome_signin_client_factory.h"
 #include "chrome/browser/signin/local_auth.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/common/pref_names.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/signin/core/browser/signin_manager.h"
 
 SigninManagerFactory::SigninManagerFactory()
     : BrowserContextKeyedServiceFactory(
         "SigninManager",
         BrowserContextDependencyManager::GetInstance()) {
   DependsOn(ChromeSigninClientFactory::GetInstance());
   DependsOn(ProfileOAuth2TokenServiceFactory::GetInstance());
 }
 
 SigninManagerFactory::~SigninManagerFactory() {
-#if defined(OS_MACOSX)
-  // Check that the number of remaining observers is as expected. Mac has a
-  // known issue wherein there might be a remaining observer
-  // (UIAppListViewDelegate).
-  int num_observers = 0;
-  if (observer_list_.might_have_observers()) {
-    ObserverListBase<SigninManagerFactory::Observer>::Iterator it(
-        observer_list_);
-    while (it.GetNext()) {
-      num_observers++;
-    }
-  }
-  DCHECK_LE(num_observers, 1);
-#endif  // defined(OS_MACOSX)
 }
 
 #if defined(OS_CHROMEOS)
 // static
 SigninManagerBase* SigninManagerFactory::GetForProfileIfExists(
     Profile* profile) {
   return static_cast<SigninManagerBase*>(
       GetInstance()->GetServiceForBrowserContext(profile, false));
 }
 
@@ skipping 96 matching lines @@
 }
 
 void SigninManagerFactory::BrowserContextShutdown(
     content::BrowserContext* context) {
   SigninManagerBase* manager = static_cast<SigninManagerBase*>(
       GetServiceForBrowserContext(context, false));
   if (manager)
     FOR_EACH_OBSERVER(Observer, observer_list_, SigninManagerShutdown(manager));
   BrowserContextKeyedServiceFactory::BrowserContextShutdown(context);
 }