Add a user id parameter to connections

mojo/shell/application_manager.h

Index: mojo/shell/application_manager.h
diff --git a/mojo/shell/application_manager.h b/mojo/shell/application_manager.h
index 83c1ad7cd54148dc5528261e4a69bebf893feedf..2716b49ea03396e315c0b212db19469b2762c5d1 100644
--- a/mojo/shell/application_manager.h
+++ b/mojo/shell/application_manager.h
@@ -34,6 +34,7 @@ class SequencedWorkerPool;
 }
 
 namespace mojo {
+class ShellConnection;
 namespace shell {
 
 class ApplicationInstance;
@@ -188,6 +189,7 @@ class ApplicationManager : public ShellClient,
   base::TaskRunner* task_runner_;
   scoped_ptr<NativeRunnerFactory> native_runner_factory_;
   std::vector<scoped_ptr<NativeRunner>> native_runners_;
+  scoped_ptr<ShellConnection> shell_connection_;
   WeakBindingSet<mojom::ApplicationManager> bindings_;
   base::WeakPtrFactory<ApplicationManager> weak_ptr_factory_;