Eliminate ShellClientFactoryConnection & just have the ApplicationManager do it.

mojo/shell/connect_util.cc

 // Copyright 2015 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 "mojo/shell/connect_util.h"
 
 #include <utility>
 
 #include "mojo/shell/application_manager.h"
 #include "mojo/shell/capability_filter.h"
 #include "mojo/shell/connect_to_application_params.h"
 
 namespace mojo {
 namespace shell {
 
 ScopedMessagePipeHandle ConnectToInterfaceByName(
     ApplicationManager* application_manager,
+    const Identity& source,
     const GURL& application_url,
     const std::string& interface_name) {
   shell::mojom::InterfaceProviderPtr remote_interfaces;
   scoped_ptr<ConnectToApplicationParams> params(new ConnectToApplicationParams);
-  params->set_source(Identity(GURL("mojo://shell/"), std::string(),
-                              GetPermissiveCapabilityFilter()));
+  params->set_source(source);
   params->SetTarget(Identity(application_url, std::string(),
                              GetPermissiveCapabilityFilter()));
   params->set_remote_interfaces(GetProxy(&remote_interfaces));
   application_manager->ConnectToApplication(std::move(params));
   MessagePipe pipe;
   remote_interfaces->GetInterface(interface_name, std::move(pipe.handle1));
   return std::move(pipe.handle0);
 }
 
 }  // namespace shell
 }  // namespace mojo