MacViews: support Views device permission prompt

chrome/browser/extensions/api/chrome_device_permissions_prompt.h

 // Copyright 2014 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_EXTENSIONS_API_CHROME_DEVICE_PERMISSIONS_PROMPT_H_
 #define CHROME_BROWSER_EXTENSIONS_API_CHROME_DEVICE_PERMISSIONS_PROMPT_H_
 
 #include "extensions/browser/api/device_permissions_prompt.h"
 
 class ChromeDevicePermissionsPrompt
     : public extensions::DevicePermissionsPrompt {
  public:
   explicit ChromeDevicePermissionsPrompt(content::WebContents* web_contents)
       : extensions::DevicePermissionsPrompt(web_contents) {}
 
   ~ChromeDevicePermissionsPrompt() override {}
 
  private:
   void ShowDialog() override;
+
+  // Shows the Views permissions prompt specifically. This is a temporary hack
+  // for MacViews; do not use this.
+  void ShowDialogViews();
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_CHROME_DEVICE_PERMISSIONS_PROMPT_H_