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

chrome/browser/net/load_timing_observer_unittest.cc

 // Copyright (c) 2010 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/load_timing_observer.h"
 
 #include "base/compiler_specific.h"
 #include "base/format_macros.h"
-#include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "base/time.h"
 #include "content/browser/browser_thread.h"
 #include "net/base/load_flags.h"
 #include "net/url_request/url_request_netlog_params.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 using net::NetLog;
 using base::TimeDelta;
@@ skipping 23 matching lines @@
                  NetLog::EventType type,
                  NetLog::EventParameters* params) {
   observer.OnAddEntry(type, current_time, source, NetLog::PHASE_END, params);
 }
 
 void AddStartURLRequestEntries(LoadTimingObserver& observer,
                                uint32 id,
                                bool request_timing) {
   scoped_refptr<net::URLRequestStartEventParameters> params(
       new net::URLRequestStartEventParameters(
-          GURL(StringPrintf("http://req%d", id)),
+          GURL(base::StringPrintf("http://req%d", id)),
           "GET",
           request_timing ? net::LOAD_ENABLE_LOAD_TIMING : 0,
           net::LOW));
   NetLog::Source source(NetLog::SOURCE_URL_REQUEST, id);
   AddStartEntry(observer, source, NetLog::TYPE_REQUEST_ALIVE, NULL);
   AddStartEntry(observer,
                 source,
                 NetLog::TYPE_URL_REQUEST_START_JOB,
                 params.get());
 }
@@ skipping 329 matching lines @@
   AddStartHTTPStreamJobEntries(observer, 2);
 
   BindHTTPStreamJobToSocket(observer, http_stream_job_source, socket_source);
   BindURLRequestToHTTPStreamJob(observer, source, http_stream_job_source);
 
   LoadTimingObserver::URLRequestRecord* record =
       observer.GetURLRequestRecord(0);
   ASSERT_EQ(1000, record->timing.ssl_start);
   ASSERT_EQ(3000, record->timing.ssl_end);
 }