Use a direct include of strings headers in chrome/browser/ui/cocoa/.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm

 // Copyright 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.
 
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #import "chrome/browser/app_controller_mac.h"
 #include "chrome/browser/command_updater.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/extensions/api/omnibox/omnibox_api.h"
 #include "chrome/browser/extensions/api/tabs/tabs_api.h"
 #include "chrome/browser/extensions/extension_action.h"
 #include "chrome/browser/extensions/location_bar_controller.h"
@@ skipping 778 matching lines @@
   if (!toolbar_model_->GetInputInProgress() &&
       toolbar_model_->GetSearchTermsType() != ToolbarModel::NO_SEARCH_TERMS) {
     const TemplateURL* template_url =
         TemplateURLServiceFactory::GetForProfile(profile_)->
             GetDefaultSearchProvider();
     if (template_url)
       return template_url->short_name();
   }
   return string16();
 }