Allow client process information to be passed via Connector::Connect().

mojo/shell/public/cpp/lib/connector_impl.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 "mojo/shell/public/cpp/lib/connector_impl.h"
 
 #include "mojo/shell/public/cpp/identity.h"
 #include "mojo/shell/public/cpp/lib/connection_impl.h"
 
 namespace mojo {
@@ skipping 43 matching lines @@
   shell::mojom::InterfaceProviderPtr local_interfaces;
   shell::mojom::InterfaceProviderRequest local_request =
       GetProxy(&local_interfaces);
   shell::mojom::InterfaceProviderPtr remote_interfaces;
   shell::mojom::InterfaceProviderRequest remote_request =
       GetProxy(&remote_interfaces);
   scoped_ptr<internal::ConnectionImpl> registry(new internal::ConnectionImpl(
       params->target().name(), params->target(),
       shell::mojom::kInvalidInstanceID, std::move(remote_interfaces),
       std::move(local_request), allowed, Connection::State::PENDING));
+
+  shell::mojom::ShellClientFactoryPtr shell_client_factory;
+  shell::mojom::PIDReceiverRequest pid_receiver_request;
+  params->TakeClientProcessConnection(&shell_client_factory,
+                                      &pid_receiver_request);
+  shell::mojom::ClientProcessConnectionPtr client_process_connection;
+  if (shell_client_factory.is_bound() && pid_receiver_request.is_pending()) {
+    client_process_connection = shell::mojom::ClientProcessConnection::New();
+    client_process_connection->shell_client_factory =
+        shell_client_factory.PassInterface().PassHandle();
+    client_process_connection->pid_receiver_request =
+        pid_receiver_request.PassMessagePipe();
+  } else if (shell_client_factory.is_bound() ||
+             pid_receiver_request.is_pending()) {
+    NOTREACHED() << "If one of shell_client_factory or pid_receiver_request is"
+                 << "valid, both must be valid.";
+    return std::move(registry);
+  }
   connector_->Connect(
       shell::mojom::Identity::From(params->target()),
       std::move(remote_request), std::move(local_interfaces),
-      registry->GetConnectCallback());
+      std::move(client_process_connection), registry->GetConnectCallback());
   return std::move(registry);
 }
 
 scoped_ptr<Connector> ConnectorImpl::Clone() {
   shell::mojom::ConnectorPtr connector;
   connector_->Clone(GetProxy(&connector));
   return make_scoped_ptr(
       new ConnectorImpl(connector.PassInterface()));
 }
 
 }  // namespace mojo