chrome://snippets-internals page for debugging NTP snippets.

chrome/browser/ui/webui/snippets_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_SNIPPETS_INTERNALS_UI_H_
+#define CHROME_BROWSER_UI_WEBUI_SNIPPETS_INTERNALS_UI_H_
+
+#include "base/macros.h"
+#include "content/public/browser/web_ui_controller.h"
+
+// The implementation for the chrome://snippets-internals page.
+class SnippetsInternalsUI : public content::WebUIController {
+ public:
+  explicit SnippetsInternalsUI(content::WebUI* web_ui);
+  ~SnippetsInternalsUI() override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SnippetsInternalsUI);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_SNIPPETS_INTERNALS_UI_H_