Convert //sync from scoped_ptr to std::unique_ptr

sync/internal_api/public/test/test_user_share.h

 // 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 handy class that takes care of setting up and destroying a
 // UserShare instance for unit tests that require one.
 //
 // The expected usage is to make this a component of your test fixture:
 //
 //   class AwesomenessTest : public testing::Test {
@@ skipping 63 matching lines @@
   // has methods which can be helpful when writing test assertions.
   syncable::TestTransactionObserver* transaction_observer();
 
   // A helper function to pretend to download this type's root node.
   static bool CreateRoot(syncer::ModelType model_type,
                          syncer::UserShare* service);
 
   size_t GetDeleteJournalSize() const;
 
  private:
-  scoped_ptr<TestDirectorySetterUpper> dir_maker_;
-  scoped_ptr<UserShare> user_share_;
+  std::unique_ptr<TestDirectorySetterUpper> dir_maker_;
+  std::unique_ptr<UserShare> user_share_;
 
   DISALLOW_COPY_AND_ASSIGN(TestUserShare);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_TEST_TEST_USER_SHARE_H_