Cascade shutdown of instances

mojo/shell/tests/connect/connect_test_singleton_app.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 "base/macros.h"
+#include "mojo/public/c/system/main.h"
+#include "mojo/shell/public/cpp/application_runner.h"
+#include "mojo/shell/public/cpp/shell_client.h"
+
+namespace mojo {
+namespace shell {
+
+class ConnectTestSingletonApp : public ShellClient {
+ public:
+  ConnectTestSingletonApp() {}
+  ~ConnectTestSingletonApp() override {}
+
+ private:
+  // mojo::ShellClient:
+  void Initialize(Connector* connector, const Identity& identity,
+                  uint32_t id) override {}
+  bool AcceptConnection(Connection* connection) override {
+    return true;
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(ConnectTestSingletonApp);
+};
+
+}  // namespace shell
+}  // namespace mojo
+
+
+MojoResult MojoMain(MojoHandle shell_handle) {
+  return mojo::ApplicationRunner(
+      new mojo::shell::ConnectTestSingletonApp).Run(shell_handle);
+}