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

rlz/lib/rlz_lib.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.
 //
 // A library to manage RLZ information for access-points shared
 // across different client applications.
 
 #include "rlz/lib/rlz_lib.h"
 
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "rlz/lib/assert.h"
 #include "rlz/lib/crc32.h"
 #include "rlz/lib/financial_ping.h"
 #include "rlz/lib/lib_values.h"
 #include "rlz/lib/rlz_value_store.h"
 #include "rlz/lib/string_utils.h"
 
 namespace {
 
 // Event information returned from ping response.
@@ skipping 620 matching lines @@
   if (cgi_string.size() >= cgi_size)
     return false;
 
   strncpy(cgi, cgi_string.c_str(), cgi_size);
   cgi[cgi_size - 1] = 0;
 
   return true;
 }
 
 }  // namespace rlz_lib