Use a direct include of strings headers in rlz/, sandbox/, skia/, sql/, sync/.

sync/notifier/sync_system_resources.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 "sync/notifier/sync_system_resources.h"
 
 #include <cstdlib>
 #include <cstring>
 #include <string>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop.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 "google/cacheinvalidation/deps/callback.h"
 #include "google/cacheinvalidation/include/types.h"
 #include "jingle/notifier/listener/push_client.h"
 #include "sync/notifier/invalidation_util.h"
 
 namespace syncer {
 
 SyncLogger::SyncLogger() {}
 SyncLogger::~SyncLogger() {}
 
@@ skipping 219 matching lines @@
 
 SyncInvalidationScheduler* SyncSystemResources::internal_scheduler() {
   return internal_scheduler_.get();
 }
 
 SyncInvalidationScheduler* SyncSystemResources::listener_scheduler() {
   return listener_scheduler_.get();
 }
 
 }  // namespace syncer