Observe chrome::NOTIFICATION_APP_TERMINATING in Chrome's AppListViewDelegate

chrome/browser/signin/signin_manager_factory.cc

Index: chrome/browser/signin/signin_manager_factory.cc
diff --git a/chrome/browser/signin/signin_manager_factory.cc b/chrome/browser/signin/signin_manager_factory.cc
index 2537b87beb02ac5d941d6e3cf88601f03cb7e85e..678fed22fa5b9f3141f4c6cdf55107cbfb56e167 100644
--- a/chrome/browser/signin/signin_manager_factory.cc
+++ b/chrome/browser/signin/signin_manager_factory.cc
@@ -24,20 +24,6 @@ SigninManagerFactory::SigninManagerFactory()
 }
 
 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)