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

sql/connection.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 "sql/connection.h"
 
 #include <string.h>
 
 #include "base/files/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
 #include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "sql/statement.h"
 #include "third_party/sqlite/sqlite3.h"
 
 namespace {
 
 // Spin for up to a second waiting for the lock to clear when setting
 // up the database.
 // TODO(shess): Better story on this.  http://crbug.com/56559
 const int kBusyTimeoutSeconds = 1;
@@ skipping 776 matching lines @@
   }
 
   // Best effort to put things back as they were before.
   const char kNoWritableSchema[] = "PRAGMA writable_schema = OFF";
   ignore_result(Execute(kNoWritableSchema));
 
   return ret;
 }
 
 }  // namespace sql