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

sync/internal_api/public/base/unique_position_unittest.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 <algorithm>
 #include <string>
 
 #include "base/base64.h"
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/sha1.h"
-#include "base/string_number_conversions.h"
+#include "base/strings/string_number_conversions.h"
 #include "sync/protocol/unique_position.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 
 namespace {
 
 class UniquePositionTest : public ::testing::Test {
  protected:
   // Accessor to fetch the length of the position's internal representation
@@ skipping 556 matching lines @@
             IndexedLessThan<int64>(kTestValues));
   std::sort(position_ordering.begin(), position_ordering.end(),
             IndexedLessThan<UniquePosition, PositionLessThan>(positions));
   EXPECT_NE(original_ordering, int64_ordering);
   EXPECT_EQ(int64_ordering, position_ordering);
 }
 
 }  // namespace
 
 }  // namespace syncer