Remove stl_util's deletion functions from net/url_request/.

net/url_request/report_sender.h

 // Copyright 2015 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_REPORT_SENDER_H_
 #define NET_URL_REQUEST_REPORT_SENDER_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 50 matching lines @@
 
   // net::URLRequest::Delegate implementation.
   void OnResponseStarted(URLRequest* request, int net_error) override;
   void OnReadCompleted(URLRequest* request, int bytes_read) override;
 
  private:
   net::URLRequestContext* const request_context_;
 
   CookiesPreference cookies_preference_;
 
-  // Owns the contained requests.
-  std::set<URLRequest*> inflight_requests_;
+  std::set<std::unique_ptr<URLRequest>> inflight_requests_;
 
   // Called when a sent report results in an error.
   ErrorCallback error_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(ReportSender);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_REPORT_SENDER_H_