Convert //sync from scoped_ptr to std::unique_ptr

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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <functional>
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/sha1.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 {
@@ skipping 666 matching lines @@
 // This requires values in the test harness to be hard-coded in ascending order.
 TEST_F(CompressedPositionTest, OrderingTest) {
   for (size_t i = 0; i < positions_.size()-1; ++i) {
     EXPECT_PRED_FORMAT2(LessThan, positions_[i], positions_[i+1]);
   }
 }
 
 }  // namespace
 
 }  // namespace syncer