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

chrome/installer/gcapi/gcapi_last_run_test.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 <stdint.h>
 
 #include <limits>
 #include <string>
 
 #include "base/guid.h"
 #include "base/strings/string_number_conversions.h"
-#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/test_reg_util_win.h"
 #include "base/time/time.h"
 #include "base/win/registry.h"
 #include "chrome/installer/gcapi/gcapi.h"
 #include "chrome/installer/util/google_update_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Time;
 using base::TimeDelta;
@@ skipping 68 matching lines @@
   EXPECT_EQ(-1, days_since_last_run);
 }
 
 TEST_F(GCAPILastRunTest, OutOfRangeLastRun) {
   Time last_run = Time::NowFromSystemTime() - TimeDelta::FromDays(-42);
   EXPECT_TRUE(SetLastRunTime(last_run.ToInternalValue()));
 
   int days_since_last_run = GoogleChromeDaysSinceLastRun();
   EXPECT_EQ(-1, days_since_last_run);
 }