Mojo: Use InterfaceFactory<Interface> for service registration

mojo/mojo_services.gypi

 # Copyright (c) 2014 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.
 
 {
   'targets': [
     {
       # GN version: //mojo/services/dbus_echo:bindings
       'target_name': 'mojo_echo_bindings',
       'type': 'static_library',
@@ skipping 509 matching lines @@
         'mojo_view_manager_common',
       ],
       'sources': [
         'services/public/cpp/view_manager/lib/node.cc',
         'services/public/cpp/view_manager/lib/node_observer.cc',
         'services/public/cpp/view_manager/lib/node_private.cc',
         'services/public/cpp/view_manager/lib/node_private.h',
         'services/public/cpp/view_manager/lib/view.cc',
         'services/public/cpp/view_manager/lib/view_private.cc',
         'services/public/cpp/view_manager/lib/view_private.h',
+        'services/public/cpp/view_manager/lib/view_manager_client_factory.cc',
         'services/public/cpp/view_manager/lib/view_manager_client_impl.cc',
         'services/public/cpp/view_manager/lib/view_manager_client_impl.h',
         'services/public/cpp/view_manager/node.h',
         'services/public/cpp/view_manager/node_observer.h',
         'services/public/cpp/view_manager/view.h',
         'services/public/cpp/view_manager/view_manager.h',
+        'services/public/cpp/view_manager/view_manager_client_factory.h',
         'services/public/cpp/view_manager/view_manager_delegate.h',
         'services/public/cpp/view_manager/view_observer.h',
         'services/public/cpp/view_manager/window_manager_delegate.h',
       ],
       'export_dependent_settings': [
         'mojo_view_manager_bindings',
       ],
     },
     {
       'target_name': 'mojo_view_manager_lib_unittests',
@@ skipping 330 matching lines @@
             'mojo_system_impl',
           ],
           'sources': [
             'services/dbus_echo/dbus_echo_service.cc',
           ],
         },
       ],
     }],
   ],
 }