Use a direct include of strings headers in chrome/test/.

chrome/test/automation/automation_json_requests.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 "chrome/test/automation/automation_json_requests.h"
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/format_macros.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "base/test/test_timeouts.h"
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/common/automation_messages.h"
 #include "chrome/test/automation/automation_proxy.h"
 
 using automation::Error;
 using automation::ErrorCode;
 using base::DictionaryValue;
 using base::ListValue;
@@ skipping 912 matching lines @@
 
 bool SendOverrideGeolocationJSONRequest(
     AutomationMessageSender* sender,
     const base::DictionaryValue* geolocation,
     Error* error) {
   scoped_ptr<DictionaryValue> dict(geolocation->DeepCopy());
   dict->SetString("command", "OverrideGeoposition");
   DictionaryValue reply_dict;
   return SendAutomationJSONRequest(sender, *dict.get(), &reply_dict, error);
 }