Remove some uses of stl_util's STLDeleteContainerPointers.

content/browser/renderer_host/p2p/socket_dispatcher_host.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 CONTENT_BROWSER_RENDERER_HOST_P2P_SOCKET_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_P2P_SOCKET_DISPATCHER_HOST_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 98 matching lines @@
 
   void StopRtpDumpOnIOThread(bool incoming, bool outgoing);
 
   content::ResourceContext* resource_context_;
   scoped_refptr<net::URLRequestContextGetter> url_context_;
 
   SocketsMap sockets_;
 
   bool monitoring_networks_;
 
-  std::set<DnsRequest*> dns_requests_;
+  std::set<std::unique_ptr<DnsRequest>> dns_requests_;
   P2PMessageThrottler throttler_;
 
   net::IPAddress default_ipv4_local_address_;
   net::IPAddress default_ipv6_local_address_;
 
   bool dump_incoming_rtp_packet_;
   bool dump_outgoing_rtp_packet_;
   RenderProcessHost::WebRtcRtpPacketCallback packet_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(P2PSocketDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_P2P_SOCKET_DISPATCHER_HOST_H_