Add apps_browsertests target (currently running 0 tests).

apps/test/app_shell_test.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 "apps/test/app_shell_test.h"
+
+#include "apps/apps_client.h"
+#include "apps/shell/browser/shell_browser_context.h"
+#include "apps/shell/browser/shell_extension_system.h"
+#include "apps/shell/browser/shell_extension_system_factory.h"
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "base/path_service.h"

[jam, 2014/03/20 16:58:13]

nit: not needed

[Yoyo Zhou, 2014/03/20 21:17:30]

Done.

+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "content/public/browser/notification_service.h"

[jam, 2014/03/20 16:58:13]

nit: not needed

[Yoyo Zhou, 2014/03/20 21:17:30]

Done.

+#include "extensions/browser/extension_system.h"
+#include "extensions/browser/renderer_startup_helper.h"
+#include "extensions/common/extension_paths.h"
+
+namespace apps {
+
+AppShellTest::AppShellTest() {}
+
+AppShellTest::~AppShellTest() {}
+
+void AppShellTest::SetUpOnMainThread() {
+  std::vector<content::BrowserContext*> contexts =
+      AppsClient::Get()->GetLoadedBrowserContexts();
+  CHECK_EQ(1U, contexts.size());
+  browser_context_ = contexts[0];
+
+  extension_system_ = static_cast<extensions::ShellExtensionSystem*>(
+      extensions::ExtensionSystem::Get(browser_context_));
+}
+
+void AppShellTest::RunTestOnMainThreadLoop() {
+  // Pump startup related events.
+  base::MessageLoopForUI::current()->RunUntilIdle();
+
+  SetUpOnMainThread();
+
+  RunTestOnMainThread();
+
+  TearDownOnMainThread();
+
+  // TODO(yoz): Make windows close. This doesn't seem to close the root window.
+  extension_system_->CloseApp();
+}
+
+bool AppShellTest::LoadAndLaunchApp(const base::FilePath& app_dir) {
+  return extension_system_->LoadAndLaunchApp(app_dir);
+}
+
+// TODO(yoz): Add some tests.

[jam, 2014/03/20 16:58:13]

I'm not understanding this comment. the tests wouldn't be in this file

[Yoyo Zhou, 2014/03/20 21:17:30]

Removed.

+
+}  // namespace apps