Remove some naked |new| statements in favor of MakeUnique.

net/http/http_stream_factory_impl.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_HTTP_HTTP_STREAM_FACTORY_IMPL_H_
 #define NET_HTTP_HTTP_STREAM_FACTORY_IMPL_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <set>
-#include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_export.h"
 #include "net/base/privacy_mode.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_stream_factory.h"
 #include "net/log/net_log_source.h"
@@ skipping 175 matching lines @@
 
   // The count of JobControllers that was most recently logged to histograms.
   size_t last_logged_job_controller_count_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpStreamFactoryImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_STREAM_FACTORY_IMPL_H_