Add a Browser Task Scheduler Chrome Internals Page

chrome/browser/ui/webui/task_scheduler_internals/task_scheduler_internals_ui.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_WEBUI_TASK_SCHEDULER_INTERNALS_TASK_SCHEDULER_INTERNALS_UI_H_
+#define CHROME_BROWSER_UI_WEBUI_TASK_SCHEDULER_INTERNALS_TASK_SCHEDULER_INTERNALS_UI_H_
+
+#include "base/macros.h"
+#include "content/public/browser/web_ui_controller.h"
+
+// The WebUI for chrome://taskscheduler-internals.
+class TaskSchedulerInternalsUI : public content::WebUIController {
+ public:
+  explicit TaskSchedulerInternalsUI(content::WebUI* web_ui);
+  ~TaskSchedulerInternalsUI() override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TaskSchedulerInternalsUI);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_TASK_SCHEDULER_INTERNALS_TASK_SCHEDULER_INTERNALS_UI_H_