Make ApplicationTestBase not use ApplicationImpl.

services/notifications/apptests/notifications_apptest.cc

 // Copyright 2015 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 "base/bind.h"
 #include "base/message_loop/message_loop.h"
-#include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/application/application_test_base.h"
 #include "mojo/public/cpp/application/connect.h"
 #include "mojo/public/cpp/bindings/callback.h"
 #include "mojo/public/cpp/environment/logging.h"
 #include "mojo/public/cpp/system/macros.h"
 #include "mojo/services/notifications/interfaces/notifications.mojom.h"
 
 namespace mojo {
 namespace {
 
 // Tests the Notification mojo service on android.
 class NotificationsApplicationTest : public test::ApplicationTestBase,
                                      public notifications::NotificationClient {
  public:
   NotificationsApplicationTest() : ApplicationTestBase(), binding_(this) {}
   ~NotificationsApplicationTest() override {}
 
   // notifications::NotificationClient implementation.
   void OnSelected() override {}
 
   void OnDismissed() override {}
 
  protected:
   // ApplicationTestBase:
   void SetUp() override {
     ApplicationTestBase::SetUp();
-    ConnectToService(application_impl()->shell(), "mojo:notifications",
+    ConnectToService(shell(), "mojo:notifications",
                      GetProxy(&notification_service_));
   }
 
   notifications::NotificationServicePtr notification_service_;
   mojo::Binding<notifications::NotificationClient> binding_;
 
  private:
   MOJO_DISALLOW_COPY_AND_ASSIGN(NotificationsApplicationTest);
 };
 
@@ skipping 25 matching lines @@
                               notification_client.Pass(),
                               GetProxy(&notification));
   notifications::NotificationDataPtr updated_notification_data =
       notifications::NotificationData::New();
   notification->Update(updated_notification_data.Pass());
   notification->Cancel();
 }
 
 }  // namespace
 }  // namespace mojo