mash: Place views Wi-Fi network config dialogs in correct window parent

chrome/browser/ui/webui/settings/chromeos/internet_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_SETTINGS_CHROMEOS_INTERNET_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_SETTINGS_CHROMEOS_INTERNET_HANDLER_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace views {
+struct WidgetParent;
+}
+
 namespace chromeos {
 namespace settings {
 
 // Chrome OS Internet settings page UI handler.
 class InternetHandler : public ::settings::SettingsPageUIHandler {
  public:
   InternetHandler();
   ~InternetHandler() override;
 
   // SettingsPageUIHandler implementation.
   void RegisterMessages() override;
   void OnJavascriptAllowed() override;
   void OnJavascriptDisallowed() override;
 
  private:
   // Settings JS handlers.
   void AddNetwork(const base::ListValue* args);
   void ConfigureNetwork(const base::ListValue* args);
 
+  // Deprecated: Use GetWidgetParent() instead.
   gfx::NativeWindow GetNativeWindow() const;
 
+  // Returns a parent for hosting dialogs.
+  views::WidgetParent GetWidgetParent() const;
+
   DISALLOW_COPY_AND_ASSIGN(InternetHandler);
 };
 
 }  // namespace settings
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SETTINGS_CHROMEOS_INTERNET_HANDLER_H_