iwyu: Include stringprintf.h where appropriate, part 2.

chrome/browser/net/predictor.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/net/predictor.h"
 
 #include <algorithm>
 #include <cmath>
 #include <set>
 #include <sstream>
 
 #include "base/compiler_specific.h"
 #include "base/metrics/histogram.h"
-#include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/net/preconnect.h"
 #include "content/browser/browser_thread.h"
 #include "net/base/address_list.h"
 #include "net/base/completion_callback.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/host_resolver.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
@@ skipping 740 matching lines @@
   // If we omit a port, it will default to 80 or 443 as appropriate.
   std::string colon_plus_port;
   if (url.has_port())
     colon_plus_port = ":" + url.port();
 
   return GURL(scheme + "://" + url.host() + colon_plus_port);
 }
 
 
 }  // namespace chrome_browser_net