Eliminate OnConnect usage

services/ui/demo/mus_demo.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 "services/ui/demo/mus_demo.h"
 
 #include "base/memory/ptr_util.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/ui/demo/window_tree_data.h"
 #include "services/ui/public/cpp/gpu/gpu.h"
@@ skipping 64 matching lines @@
   capture_client_ = base::MakeUnique<aura::client::DefaultCaptureClient>();
   property_converter_ = base::MakeUnique<aura::PropertyConverter>();
   wm_state_ = base::MakeUnique<::wm::WMState>();
 
   window_tree_client_ = CreateWindowTreeClient();
   OnStartImpl();
 
   env_->SetWindowTreeClient(window_tree_client_.get());
 }
 
-bool MusDemo::OnConnect(const service_manager::ServiceInfo& remote_info,
-                        service_manager::InterfaceRegistry* registry) {
-  return true;
-}
-
 void MusDemo::OnEmbed(
     std::unique_ptr<aura::WindowTreeHostMus> window_tree_host) {
   NOTREACHED();
 }
 
 void MusDemo::OnUnembed(aura::Window* root) {
   NOTREACHED();
 }
 
 void MusDemo::OnEmbedRootDestroyed(aura::WindowTreeHostMus* window_tree_host) {
   NOTREACHED();
 }
 
 void MusDemo::OnLostConnection(aura::WindowTreeClient* client) {
   window_tree_client_.reset();
   window_tree_data_list_.clear();
 }
 
 void MusDemo::OnPointerEventObserved(const PointerEvent& event,
                                      aura::Window* target) {}
 
 aura::PropertyConverter* MusDemo::GetPropertyConverter() {
   return property_converter_.get();
 }
 
 }  // namespace demo
 }  // namespace ui