Use a direct include of strings headers in content/renderer and content/shell.

content/renderer/dom_automation_controller.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 "content/renderer/dom_automation_controller.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/statistics_recorder.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/view_messages.h"
 
 using webkit_glue::CppArgumentList;
 using webkit_glue::CppVariant;
 
 namespace content {
 
 DomAutomationController::DomAutomationController()
     : sender_(NULL),
@@ skipping 142 matching lines @@
   if (!args[0].isNumber()) {
     result->SetNull();
     return;
   }
 
   automation_id_ = args[0].ToInt32();
   result->Set(true);
 }
 
 }  // namespace content