Remove Client relationship between mojo.Shell/mojo.Application

mojo/public/interfaces/application/shell.mojom

 // Copyright 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.
 
 module mojo;
 
-import "mojo/public/interfaces/application/application.mojom";
 import "mojo/public/interfaces/application/service_provider.mojom";
 
 // An interface through which a Mojo application may communicate with the Mojo
 // system and request connections to other applications.
-[Client=Application]
 interface Shell {
   // Establishes a connection with another application (identified by
   // |application_url|) through which the calling application and the other
   // application may request services from one another.
   //
   // If the calling application would like to request services from the other
   // application, it should pass a valid interface request in the |services|
   // parameter (i.e. one containing a valid message pipe endpoint). If the other
   // application does not wish to offer services, it may either not bind an
   // implementation to the interface request, or else bind an implementation
   // that will reject some or all service requests.
   //
   // If the calling application would like to offer services to the other
   // application, it should pass a bound interface through the
   // |exposed_services| parameter. The other application may then request
   // services through that interface.
   //
   // At least one of |services| or |exposed_services| should be valid/bound in
   // the call.
   //
   // If the |application_url| does not contain a domain, but is of the form
   // "mojo:{service}", it is up to the Mojo shell to select an appropriate
   // application for the service. Currently, the shell does this based on the
   // value of its --origin flag.
   ConnectToApplication(string application_url,
                        ServiceProvider&? services,
                        ServiceProvider? exposed_services);
 };