MD Bookmarks: Disable 'Open in Incognito Window' when Incognito is disabled

chrome/browser/ui/webui/md_bookmarks/md_bookmarks_browsertest.h

+// Copyright 2017 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_WEBUI_MD_BOOKMARKS_MD_BOOKMARKS_BROWSERTEST_H_
+#define CHROME_BROWSER_UI_WEBUI_MD_BOOKMARKS_MD_BOOKMARKS_BROWSERTEST_H_
+
+#include "chrome/test/base/web_ui_browser_test.h"
+#include "content/public/browser/web_ui_message_handler.h"
+
+class MdBookmarksBrowserTest : public WebUIBrowserTest,
+                               public content::WebUIMessageHandler {
+ public:
+  MdBookmarksBrowserTest();
+  ~MdBookmarksBrowserTest() override;
+
+  void SetIncognitoAvailability(int availability);
+
+ private:
+  void HandleSetIncognitoAvailability(const base::ListValue* args);
+
+  // content::WebUIMessageHandler:
+  void RegisterMessages() override;
+
+  // WebUIBrowserTest:
+  content::WebUIMessageHandler* GetMockMessageHandler() override;
+
+  DISALLOW_COPY_AND_ASSIGN(MdBookmarksBrowserTest);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_MD_BOOKMARKS_MD_BOOKMARKS_BROWSERTEST_H_