Use a direct include of strings headers in chrome/browser/ui/webui/, part 1.

chrome/browser/ui/webui/cookies_tree_model_util.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/browser/ui/webui/cookies_tree_model_util.h"
 
 #include <vector>
 
 #include "base/i18n/time_formatting.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
 #include "base/values.h"
 #include "chrome/browser/browsing_data/cookies_tree_model.h"
 #include "content/public/browser/indexed_db_context.h"
 #include "grit/generated_resources.h"
 #include "net/cookies/canonical_cookie.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/text/bytes_formatting.h"
 
 namespace {
 
@@ skipping 288 matching lines @@
     child = id_map_.Lookup(node_id);
     child_index = parent->GetIndexOf(child);
     if (child_index == -1)
       break;
 
     parent = child;
   }
 
   return child_index >= 0 ? child : NULL;
 }