Adding client code for new Windows 10 First Run Experience

chrome/browser/ui/webui/welcome_win10_handler.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_WELCOME_WIN10_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_WELCOME_WIN10_HANDLER_H_
+
+#include "base/macros.h"
+#include "content/public/browser/web_ui_message_handler.h"
+
+// Handles actions on the Windows 10 specific Welcome page.
+class WelcomeWin10Handler : public content::WebUIMessageHandler {
+ public:
+  explicit WelcomeWin10Handler(content::WebUI* web_ui);
+  ~WelcomeWin10Handler() override;
+
+  // content::WebUIMessageHandler:
+  void RegisterMessages() override;
+
+ private:
+  void HandleSetDefaultBrowser(const base::ListValue* args);
+  void HandleContinue(const base::ListValue* args);
+
+  DISALLOW_COPY_AND_ASSIGN(WelcomeWin10Handler);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_WELCOME_WIN10_HANDLER_H_