text: // Copyright (c) 2011 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_HISTORY_NAVIGATION_HANDLER_H_
  #define CHROME_BROWSER_UI_WEBUI_HISTORY_NAVIGATION_HANDLER_H_
  
  #include "base/compiler_specific.h"
  #include "base/macros.h"
  #include "content/public/browser/web_ui_message_handler.h"
  
  namespace base {
  class ListValue;
  }
  
  namespace webui {
  
  // A place to add handlers for messages shared across all WebUI pages.
  class NavigationHandler : public content::WebUIMessageHandler {
   public:
    NavigationHandler();
  
    NavigationHandler(const NavigationHandler&) = delete;
    NavigationHandler& operator=(const NavigationHandler&) = delete;
  
    ~NavigationHandler() override;
  
    // WebUIMessageHandler implementation.
    void RegisterMessages() override;
  
   private:
    void HandleNavigateToUrl(const base::ListValue* args);
  };
  
  }  // namespace webui
  
  #endif  // CHROME_BROWSER_UI_WEBUI_HISTORY_NAVIGATION_HANDLER_H_
  