Remove unneeded stringprintf.h usage in chrome/ and net/

net/url_request/url_request_throttler_unittest.cc

 // 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.
 
 #include <memory>
 
 #include "base/metrics/histogram_samples.h"
 #include "base/pickle.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
-#include "base/strings/stringprintf.h"
 #include "base/test/histogram_tester.h"
 #include "base/time/time.h"
 #include "net/base/load_flags.h"
 #include "net/base/request_priority.h"
 #include "net/base/test_completion_callback.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_test_util.h"
 #include "net/url_request/url_request_throttler_manager.h"
 #include "net/url_request/url_request_throttler_test_support.h"
@@ skipping 428 matching lines @@
         FAIL();
     }
 
     scoped_refptr<URLRequestThrottlerEntryInterface> entry_after =
         manager.RegisterRequestUrl(GURL("http://www.example.com/"));
     EXPECT_FALSE(entry_after->ShouldRejectRequest(*request_));
   }
 }
 
 }  // namespace net