Add rudimentary mash shelf functionality.

mash/shelf/shelf_application.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/shelf/shelf_application.h"
+
+#include <stdint.h>
+
+#include "components/mus/public/cpp/property_type_converters.h"
+#include "mash/shelf/shelf_view.h"
+#include "mash/wm/public/interfaces/container.mojom.h"
+#include "mojo/shell/public/cpp/application_impl.h"
+#include "ui/views/mus/aura_init.h"
+#include "ui/views/mus/native_widget_mus.h"
+#include "ui/views/mus/window_manager_connection.h"
+
+namespace mash {
+namespace shelf {
+
+ShelfApplication::ShelfApplication() {}
+
+ShelfApplication::~ShelfApplication() {}
+
+void ShelfApplication::Initialize(mojo::ApplicationImpl* app) {
+  tracing_.Initialize(app);
+
+  aura_init_.reset(new views::AuraInit(app, "views_mus_resources.pak"));
+  views::WindowManagerConnection::Create(app);
+
+  views::Widget* widget = new views::Widget;
+  views::Widget::InitParams params(
+      views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
+  params.delegate = new ShelfView(app);
+
+  std::map<std::string, std::vector<uint8_t>> properties;
+  properties[mash::wm::mojom::kWindowContainer_Property] =
+      mojo::TypeConverter<const std::vector<uint8_t>, int32_t>::Convert(
+          mash::wm::mojom::CONTAINER_USER_SHELF);
+  mus::Window* window =
+      views::WindowManagerConnection::Get()->NewWindow(properties);
+  params.native_widget = new views::NativeWidgetMus(
+      widget, app->shell(), window, mus::mojom::SURFACE_TYPE_DEFAULT);
+  widget->Init(params);
+  widget->Show();
+}
+
+bool ShelfApplication::ConfigureIncomingConnection(
+    mojo::ApplicationConnection* connection) {
+  return true;
+}
+
+}  // namespace shelf
+}  // namespace mash