Add a user id parameter to connections

mojo/shell/tests/application_manager_apptest.cc

Index: mojo/shell/tests/application_manager_apptest.cc
diff --git a/mojo/shell/tests/application_manager_apptest.cc b/mojo/shell/tests/application_manager_apptest.cc
index 9a6b16919335d8463390c1c28a306e44a97e3ba9..367b8fa93fea829fe26d3f2586301af8b6b35abe 100644
--- a/mojo/shell/tests/application_manager_apptest.cc
+++ b/mojo/shell/tests/application_manager_apptest.cc
@@ -38,7 +38,8 @@ class ApplicationManagerAppTestDelegate
 
  private:
   // mojo::ShellClient:
-  void Initialize(Shell* shell, const std::string& url, uint32_t id) override {}
+  void Initialize(Shell* shell, const std::string& url, uint32_t id,
+                  uint32_t user_id) override {}
   bool AcceptConnection(Connection* connection) override {
     connection->AddInterface<CreateInstanceForHandleTest>(this);
     return true;