Use a direct include of strings headers in chrome/browser/r*-s*/.

chrome/browser/safe_browsing/protocol_manager.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/safe_browsing/protocol_manager.h"
 
 #ifndef NDEBUG
 #include "base/base64.h"
 #endif
 #include "base/environment.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/rand_util.h"
 #include "base/stl_util.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/timer.h"
 #include "chrome/browser/safe_browsing/protocol_parser.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/env_vars.h"
 #include "google_apis/google_api_keys.h"
 #include "net/base/escape.h"
 #include "net/base/load_flags.h"
 #include "net/base/net_errors.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context_getter.h"
@@ skipping 745 matching lines @@
     FullHashCallback callback, bool is_download)
     : callback(callback),
       is_download(is_download) {
 }
 
 SafeBrowsingProtocolManager::FullHashDetails::~FullHashDetails() {
 }
 
 SafeBrowsingProtocolManagerDelegate::~SafeBrowsingProtocolManagerDelegate() {
 }