[Sync] Removing duplicate includes, part 2.

components/sync/base/ordinal_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 "components/sync/base/ordinal.h"
 
-#include <stdint.h>
-
-#include <algorithm>
 #include <cctype>
-#include <cstddef>
-#include <string>
 #include <vector>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 
 namespace {
 
 struct TestOrdinalTraits {
   static const uint8_t kZeroDigit = '0';
@@ skipping 334 matching lines @@
   std::vector<LongOrdinal> ordinals = sorted_ordinals;
   std::random_shuffle(ordinals.begin(), ordinals.end());
   std::sort(ordinals.begin(), ordinals.end(), LongOrdinal::LessThanFn());
   EXPECT_TRUE(std::equal(ordinals.begin(), ordinals.end(),
                          sorted_ordinals.begin(), LongOrdinal::EqualsFn()));
 }
 
 }  // namespace
 
 }  // namespace syncer