Add a user id parameter to connections

mojo/shell/standalone/context.cc

Index: mojo/shell/standalone/context.cc
diff --git a/mojo/shell/standalone/context.cc b/mojo/shell/standalone/context.cc
index 2c49e73f591756513d378fbf76619e0201096917..a966020c6897fd3a9c4cb2668a0ac3bad030d2da 100644
--- a/mojo/shell/standalone/context.cc
+++ b/mojo/shell/standalone/context.cc
@@ -155,9 +155,9 @@ void Context::Init(const base::FilePath& shell_file_root) {
   new TracingInterfaceProvider(&tracer_, GetProxy(&tracing_local_interfaces));
 
   scoped_ptr<ConnectParams> params(new ConnectParams);
-  params->set_source(Identity(GURL("mojo:shell"), std::string(),
-                              GetPermissiveCapabilityFilter()));
+  params->set_source(CreateShellIdentity());
   params->set_target(Identity(GURL("mojo:tracing"), std::string(),
+                              mojom::Shell::kUserInherit,
                               GetPermissiveCapabilityFilter()));
   params->set_remote_interfaces(GetProxy(&tracing_remote_interfaces));
   params->set_local_interfaces(std::move(tracing_local_interfaces));
@@ -227,8 +227,10 @@ void Context::Run(const GURL& url) {
   shell::mojom::InterfaceProviderPtr local_interfaces;
 
   scoped_ptr<ConnectParams> params(new ConnectParams);
+  params->set_source(CreateShellIdentity());
   params->set_target(
-      Identity(url, std::string(), GetPermissiveCapabilityFilter()));
+      Identity(url, std::string(), mojom::Shell::kUserRoot,
+               GetPermissiveCapabilityFilter()));
   params->set_remote_interfaces(GetProxy(&remote_interfaces));
   params->set_local_interfaces(std::move(local_interfaces));
   application_manager_->Connect(std::move(params));