mash: Exit the root process if the window manager service crashes

services/service_manager/background/tests/test_service.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 "mojo/public/cpp/bindings/binding_set.h"
 #include "services/service_manager/background/tests/test.mojom.h"
 #include "services/service_manager/public/c/main.h"
 #include "services/service_manager/public/cpp/interface_registry.h"
 #include "services/service_manager/public/cpp/service.h"
+#include "services/service_manager/public/cpp/service_context.h"
 #include "services/service_manager/public/cpp/service_runner.h"
 
 namespace service_manager {
 
+// A service that exports a simple interface for testing. Used to test the
+// parent background service manager.
 class TestClient : public Service,
                    public InterfaceFactory<mojom::TestService>,
                    public mojom::TestService {
  public:
   TestClient() {}
   ~TestClient() override {}
 
  private:
   // Service:
   bool OnConnect(const ServiceInfo& remote_info,
                  InterfaceRegistry* registry) override {
     registry->AddInterface(this);
     return true;
   }
   bool OnStop() override {
     return true;
   }
 
   // InterfaceFactory<mojom::TestService>:
   void Create(const Identity& remote_identity,
               mojo::InterfaceRequest<mojom::TestService> request) override {
     bindings_.AddBinding(this, std::move(request));
   }
 
   // mojom::TestService
   void Test(const TestCallback& callback) override {
     callback.Run();
   }
 
+  void Quit() override { context()->RequestQuit(); }
+
   mojo::BindingSet<mojom::TestService> bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(TestClient);
 };
 
 }  // namespace service_manager
 
 MojoResult ServiceMain(MojoHandle service_request_handle) {
   service_manager::ServiceRunner runner(new service_manager::TestClient);
   return runner.Run(service_request_handle);
 }