Introduces AppActivity and handler of chrome.shell API.

athena/main/athena_app_window_controller.cc

+// Copyright 2014 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 "athena/main/athena_app_window_controller.h"
+
+#include "apps/shell/browser/shell_app_window.h"
+#include "athena/activity/public/activity_factory.h"
+#include "athena/activity/public/activity_manager.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/public/browser/web_contents_observer.h"
+
+namespace athena {
+
+AthenaAppWindowController::AthenaAppWindowController() {
+}
+
+AthenaAppWindowController::~AthenaAppWindowController() {
+}
+
+apps::ShellAppWindow* AthenaAppWindowController::CreateAppWindow(
+    content::BrowserContext* context) {
+  apps::ShellAppWindow* app_window = new apps::ShellAppWindow();
+  app_window->Init(context, gfx::Size(100, 100));
+  ActivityManager::Get()->AddActivity(ActivityFactory::Get()->CreateAppActivity(
+      app_window));
+  return app_window;
+}
+
+void AthenaAppWindowController::CloseAppWindows() {
+  // Do nothing.
+}
+
+}  // namespace athena