Change type of interface created by mojo:view_manager

mojo/mojo_services.gypi

 {
   'targets': [
     {
       'target_name': 'mojo_echo_bindings',
       'type': 'static_library',
       'sources': [
         'services/dbus_echo/echo.mojom',
       ],
       'includes': [ 'public/tools/bindings/mojom_bindings_generator.gypi' ],
       'export_dependent_settings': [
@@ skipping 268 matching lines @@
           'sources': [
             'services/view_manager/ids.h',
             'services/view_manager/main.cc',
             'services/view_manager/node.cc',
             'services/view_manager/node.h',
             'services/view_manager/node_delegate.h',
             'services/view_manager/root_node_manager.cc',
             'services/view_manager/root_node_manager.h',
             'services/view_manager/root_view_manager.cc',
             'services/view_manager/root_view_manager.h',
+            'services/view_manager/root_view_manager_delegate.h',
             'services/view_manager/view.cc',
             'services/view_manager/view.h',
             'services/view_manager/view_manager_connection.cc',
             'services/view_manager/view_manager_connection.h',
+            'services/view_manager/view_manager_init_connection.cc',
+            'services/view_manager/view_manager_init_connection.h',
             'services/view_manager/view_manager_export.h',
           ],
           'defines': [
             'MOJO_VIEW_MANAGER_IMPLEMENTATION',
           ],
         },
         {
           'target_name': 'mojo_view_manager_run_unittests',
           'type': 'static_library',
           'dependencies': [
@@ skipping 61 matching lines @@
             'mojo_system_impl',
           ],
           'sources': [
             'services/dbus_echo/dbus_echo_service.cc',
           ],
         },
       ],
     }],
   ],
 }