Convert ViewProviderApp and ContentViewerApp to implement ApplicationImplBase instead of Applicatio…

apps/moterm/moterm_app.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 "apps/moterm/moterm_app.h"
 
 #include "apps/moterm/moterm_view.h"
 #include "mojo/public/cpp/application/connect.h"
 
 MotermApp::MotermApp() {}
 
 MotermApp::~MotermApp() {}
 
 void MotermApp::CreateView(
     const std::string& connection_url,
     mojo::InterfaceRequest<mojo::ui::ViewOwner> view_owner_request,
     mojo::InterfaceRequest<mojo::ServiceProvider> services) {
-  new MotermView(mojo::CreateApplicationConnector(app_impl()->shell()),
+  new MotermView(mojo::CreateApplicationConnector(shell()),
                  view_owner_request.Pass(), services.Pass());
 }