Convert //extensions/browser from scoped_ptr to std::unique_ptr

extensions/browser/guest_view/web_view/web_view_permission_helper.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 EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_PERMISSION_HELPER_H_
 #define EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_PERMISSION_HELPER_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/metrics/user_metrics_action.h"
@@ skipping 135 matching lines @@
                          content::RenderFrameHost* render_frame_host) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 #endif  // defined(ENABLE_PLUGINS)
 
   // A counter to generate a unique request id for a permission request.
   // We only need the ids to be unique for a given WebViewGuest.
   int next_permission_request_id_;
 
   WebViewPermissionHelper::RequestMap pending_permission_requests_;
 
-  scoped_ptr<WebViewPermissionHelperDelegate>
+  std::unique_ptr<WebViewPermissionHelperDelegate>
       web_view_permission_helper_delegate_;
 
   WebViewGuest* const web_view_guest_;
 
   base::WeakPtrFactory<WebViewPermissionHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewPermissionHelper);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_PERMISSION_HELPER_H_