arc: Implement uninstall confirmation dialog for Arc app.

chrome/browser/ui/app_list/arc/arc_app_dialog.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_APP_LIST_ARC_ARC_APP_DIALOG_H_
+#define CHROME_BROWSER_UI_APP_LIST_ARC_ARC_APP_DIALOG_H_
+
+#include <string>
+
+#include "base/callback.h"
+
+class AppListControllerDelegate;
+class Profile;
+
+namespace arc {
+
+// Shows a dialog for user to confirm uninstallation of Arc app.
+// Currently, Arc app can only be manually uninstalled from AppList. But it
+// would be simple to enable the dialog to shown from other source.
+void ShowArcAppUninstallDialog(Profile* profile,
+                               AppListControllerDelegate* controller,
+                               const std::string& app_id);
+
+// Test purpose methods.
+bool IsArcAppDialogViewAliveForTest();
+
+bool CloseAppDialogViewAndConfirmForTest(bool confirm);
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_UI_APP_LIST_ARC_ARC_APP_DIALOG_H_