Use a direct include of strings headers in chrome/browser/d*/.

chrome/browser/download/download_query.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/download/download_query.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/i18n/case_conversion.h"
 #include "base/i18n/string_search.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
-#include "base/string16.h"
-#include "base/stringprintf.h"
+#include "base/strings/string16.h"
 #include "base/strings/string_split.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/download_item.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_util.h"
 #include "third_party/re2/re2/re2.h"
@@ skipping 383 matching lines @@
 
 void DownloadQuery::FinishSearch(DownloadQuery::DownloadVector* results) const {
   if (!sorters_.empty())
     std::partial_sort(results->begin(),
                       results->begin() + std::min(limit_, results->size()),
                       results->end(),
                       DownloadComparator(sorters_));
   if (results->size() > limit_)
     results->resize(limit_);
 }