Switch to using scoped_ptr with UserData

net/url_request/url_fetcher.h

 // Copyright (c) 2012 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 NET_URL_REQUEST_URL_FETCHER_H_
 #define NET_URL_REQUEST_URL_FETCHER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 76 matching lines @@
     POST,
     HEAD,
     DELETE_REQUEST,   // DELETE is already taken on Windows.
                       // <winnt.h> defines a DELETE macro.
     PUT,
     PATCH,
   };
 
   // Used by SetURLRequestUserData.  The callback should make a fresh
   // base::SupportsUserData::Data object every time it's called.
-  typedef base::Callback<base::SupportsUserData::Data*()> CreateDataCallback;
+  typedef base::Callback<std::unique_ptr<base::SupportsUserData::Data>()>
+      CreateDataCallback;
 
   // Used by SetUploadStreamFactory. The callback should assign a fresh upload
   // data stream every time it's called.
   typedef base::Callback<std::unique_ptr<UploadDataStream>()>
       CreateUploadStreamCallback;
 
   virtual ~URLFetcher();
 
   // |url| is the URL to send the request to. It must be valid.
   // |request_type| is the type of request to make.
@@ skipping 253 matching lines @@
   // be removed once the URLFetcher is destroyed.  User should not take
   // ownership more than once, or call this method after taking ownership.
   virtual bool GetResponseAsFilePath(
       bool take_ownership,
       base::FilePath* out_response_path) const = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_FETCHER_H_