Remove shell::Connection* parameter to InterfaceFactory<T>::Create()

mash/webtest/webtest.cc

 // Copyright 2016 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 "mash/webtest/webtest.h"
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string16.h"
@@ skipping 178 matching lines @@
       GetProxy(&view_client);
   view_factory->CreateView(std::move(view_client), GetProxy(&view));
   UI* ui = new UI(this, std::move(view), std::move(view_client_request));
   views::Widget* window = views::Widget::CreateWindowWithContextAndBounds(
       ui, nullptr, gfx::Rect(50, 10, 600, 600));
   ui->NavigateTo(GURL("http://www.theverge.com/"));
   window->Show();
   AddWindow(window);
 }
 
-void Webtest::Create(shell::Connection* connection,
+void Webtest::Create(const shell::Identity& remote_identity,
                      mojom::LaunchableRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 }  // namespace webtest
 }  // namespace mash