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

net/url_request/report_sender.h

Index: net/url_request/report_sender.h
diff --git a/net/url_request/report_sender.h b/net/url_request/report_sender.h
index 0bcf28737f5642557acd7337203c6ae3f8ba71a4..18ac524c06785b0080b60a32838c4d7d42d69e48 100644
--- a/net/url_request/report_sender.h
+++ b/net/url_request/report_sender.h
@@ -5,8 +5,8 @@
 #ifndef NET_URL_REQUEST_REPORT_SENDER_H_
 #define NET_URL_REQUEST_REPORT_SENDER_H_
 
+#include <map>
 #include <memory>
-#include <set>
 #include <string>
 
 #include "base/callback.h"
@@ -68,8 +68,7 @@ class NET_EXPORT ReportSender
 
   CookiesPreference cookies_preference_;
 
-  // Owns the contained requests.
-  std::set<URLRequest*> inflight_requests_;
+  std::map<URLRequest*, std::unique_ptr<URLRequest>> inflight_requests_;
 
   // Called when a sent report results in an error.
   ErrorCallback error_callback_;