Add a user id parameter to connections

mojo/shell/tests/application_manager_apptest.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 <stddef.h>
 #include <stdint.h>
 
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 20 matching lines @@
  public:
   ApplicationManagerAppTestDelegate()
       : target_id_(mojom::Shell::kInvalidApplicationID),
         binding_(this) {}
   ~ApplicationManagerAppTestDelegate() override {}
 
   uint32_t target_id() const { return target_id_; }
 
  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;
   }
 
   // InterfaceFactory<CreateInstanceForHandleTest>:
   void Create(Connection* connection,
               InterfaceRequest<CreateInstanceForHandleTest> request) override {
     binding_.Bind(std::move(request));
   }
@@ skipping 151 matching lines @@
 
   driver.set_connection_error_handler(
       base::Bind(&ApplicationManagerAppTest::OnDriverQuit,
                  base::Unretained(this)));
   driver->QuitDriver();
   base::MessageLoop::current()->Run();
 }
 
 }  // namespace shell
 }  // namespace mojo