Introduce mash/shell

mash/shell/shell_application_delegate.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 "mash/shell/shell_application_delegate.h"
+
+#include "base/bind.h"
+#include "mojo/application/public/cpp/application_connection.h"
+#include "mojo/application/public/cpp/application_impl.h"
+
+namespace mash {
+namespace shell {
+
+ShellApplicationDelegate::ShellApplicationDelegate() {}
+
+ShellApplicationDelegate::~ShellApplicationDelegate() {}
+
+void ShellApplicationDelegate::Initialize(mojo::ApplicationImpl* app) {
+  app_ = app;
+  StartWindowManager();
+  StartSystemUI();
+}
+
+bool ShellApplicationDelegate::ConfigureIncomingConnection(
+    mojo::ApplicationConnection* connection) {
+  return false;
+}
+
+void ShellApplicationDelegate::StartWindowManager() {
+  StartRestartableService(
+      "mojo:desktop_wm",
+      base::Bind(&ShellApplicationDelegate::StartWindowManager,
+                 base::Unretained(this)));
+}
+
+void ShellApplicationDelegate::StartSystemUI() {
+  StartRestartableService("mojo:system_ui",
+                          base::Bind(&ShellApplicationDelegate::StartSystemUI,
+                                     base::Unretained(this)));
+}
+
+void ShellApplicationDelegate::StartRestartableService(
+    const std::string& url,
+    const base::Closure& restart_callback) {
+  // TODO(beng): This would be the place to insert logic that counted restarts
+  //             to avoid infinite crash-restart loops.
+  scoped_ptr<mojo::ApplicationConnection> connection =
+      app_->ConnectToApplication(url);
+  connection->SetRemoteServiceProviderConnectionErrorHandler(restart_callback);
+  connections_[url] = std::move(connection);
+}
+
+}  // namespace shell
+}  // namespace main