Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/screen_capture_notification_ui.h

 // Copyright 2013 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_SCREEN_CAPTURE_NOTIFICATION_UI_H_
 #define CHROME_BROWSER_UI_SCREEN_CAPTURE_NOTIFICATION_UI_H_
 
 #include "base/callback.h"
 #include "base/strings/string16.h"
 #include "content/public/common/media_stream_request.h"
 
 // Interface for screen capture notification UI shown when content of the screen
 // is being captured.
 class ScreenCaptureNotificationUI : public content::MediaStreamUI {
  public:
   ~ScreenCaptureNotificationUI() override {}
 
   // Creates platform-specific screen capture notification UI. |text| specifies
   // the text that should be shown in the notification.
-  static scoped_ptr<ScreenCaptureNotificationUI> Create(
+  static std::unique_ptr<ScreenCaptureNotificationUI> Create(
       const base::string16& text);
 };
 
 #endif  // CHROME_BROWSER_UI_SCREEN_CAPTURE_NOTIFICATION_UI_H_