Convert //chrome/browser/sync_file_system from scoped_ptr to std::unique_ptr

chrome/browser/sync_file_system/local/local_file_change_tracker_unittest.cc

 // Copyright 2013 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 "chrome/browser/sync_file_system/local/local_file_change_tracker.h"
 
 #include <stdint.h>
 
 #include <deque>
+#include <memory>
 #include <set>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/stl_util.h"
 #include "base/thread_task_runner_handle.h"
 #include "chrome/browser/sync_file_system/local/canned_syncable_file_system.h"
 #include "chrome/browser/sync_file_system/local/local_file_sync_context.h"
 #include "chrome/browser/sync_file_system/local/sync_file_system_backend.h"
 #include "chrome/browser/sync_file_system/sync_status_code.h"
 #include "chrome/browser/sync_file_system/syncable_file_system_util.h"
 #include "content/public/test/mock_blob_url_request_context.h"
 #include "storage/browser/fileapi/file_system_context.h"
@@ skipping 82 matching lines @@
   void RestoreChangesFromTrackerDB() {
     change_tracker()->CollectLastDirtyChanges(file_system_context());
   }
 
   void GetAllChangedURLs(storage::FileSystemURLSet* urls) {
     change_tracker()->GetAllChangedURLs(urls);
   }
 
   base::MessageLoopForIO message_loop_;
   base::ScopedTempDir base_dir_;
-  scoped_ptr<leveldb::Env> in_memory_env_;
+  std::unique_ptr<leveldb::Env> in_memory_env_;
   CannedSyncableFileSystem file_system_;
 
  private:
   scoped_refptr<LocalFileSyncContext> sync_context_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalFileChangeTrackerTest);
 };
 
 TEST_F(LocalFileChangeTrackerTest, DemoteAndPromote) {
   EXPECT_EQ(base::File::FILE_OK, file_system_.OpenFileSystem());
@@ skipping 579 matching lines @@
 
   // Make sure they're gone from the database too.
   DropChangesInTracker();
   RestoreChangesFromTrackerDB();
 
   GetAllChangedURLs(&urls);
   EXPECT_TRUE(urls.empty());
 }
 
 }  // namespace sync_file_system