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

sync/internal_api/public/base/unique_position.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/internal_api/public/base/unique_position.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
-#include "base/string_number_conversions.h"
+#include "base/strings/string_number_conversions.h"
 #include "sync/protocol/unique_position.pb.h"
 #include "third_party/zlib/zlib.h"
 
 namespace syncer {
 
 const size_t UniquePosition::kSuffixLength = 28;
 const size_t UniquePosition::kCompressBytesThreshold = 128;
 
 // static.
 bool UniquePosition::IsValidSuffix(const std::string& suffix) {
@@ skipping 354 matching lines @@
 UniquePosition::UniquePosition(
     const std::string& prefix,
     const std::string& suffix)
   : bytes_(prefix + suffix),
     is_valid_(IsValidBytes(bytes_)) {
   DCHECK(IsValidSuffix(suffix));
   DCHECK(IsValid());
 }
 
 }  // namespace syncer