[Merge to M58] CrOS: Do not allow notifications to be added during shutdown.

chrome/browser/notifications/notification_test_util.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/notifications/notification_test_util.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
 #include "chrome/browser/ui/exclusive_access/exclusive_access_manager.h"
 #include "content/public/test/test_utils.h"
@@ skipping 34 matching lines @@
     if (iter->first.delegate_id() != delegate_id || iter->second != profile_id)
       continue;
     notifications_.erase(iter);
     return true;
   }
   return false;
 }
 
 void StubNotificationUIManager::Add(const Notification& notification,
                                     Profile* profile) {
+  if (is_shutdown_started_)
+    return;
+
   notifications_.push_back(std::make_pair(
       notification, NotificationUIManager::GetProfileID(profile)));
 
   if (!notification_added_callback_.is_null()) {
     notification_added_callback_.Run();
     notification_added_callback_.Reset();
   }
 
   // Fire the Display() event on the delegate.
   notification.delegate()->Display();
@@ skipping 82 matching lines @@
   NOTIMPLEMENTED();
   return false;
 }
 
 void StubNotificationUIManager::CancelAll() {
   for (const auto& pair : notifications_)
     pair.first.delegate()->Close(false /* by_user */);
   notifications_.clear();
 }
 
+void StubNotificationUIManager::StartShutdown() {
+  is_shutdown_started_ = true;
+  CancelAll();
+}
+
 FullscreenStateWaiter::FullscreenStateWaiter(
     Browser* browser, bool desired_state)
     : browser_(browser),
       desired_state_(desired_state) {}
 
 void FullscreenStateWaiter::Wait() {
   while (desired_state_ !=
       browser_->exclusive_access_manager()->context()->IsFullscreen()) {
     content::RunAllPendingInMessageLoop();
   }
 }