Rewrite base::Bind to base::BindOnce with base_bind_rewriters in //chrome/browser/sync_file_system

chrome/browser/sync_file_system/drive_backend/drive_backend_sync_unittest.cc

 // Copyright 2014 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 <stddef.h>
 #include <stdint.h>
 #include <algorithm>
 #include <stack>
 #include <utility>
 
@@ skipping 579 matching lines @@
   }
 
   FakeDriveServiceHelper* fake_drive_service_helper() {
     return fake_drive_service_helper_.get();
   }
 
   void WaitForIdleWorker() {
     base::RunLoop run_loop;
     worker_task_runner_->PostTask(
         FROM_HERE,
-        base::Bind(&SyncWorker::CallOnIdleForTesting,
-                   base::Unretained(sync_worker()),
-                   RelayCallbackToCurrentThread(
-                       FROM_HERE,
-                       run_loop.QuitClosure())));
+        base::BindOnce(
+            &SyncWorker::CallOnIdleForTesting, base::Unretained(sync_worker()),
+            RelayCallbackToCurrentThread(FROM_HERE, run_loop.QuitClosure())));
     run_loop.Run();
   }
 
  private:
   SyncWorker* sync_worker() {
     return static_cast<SyncWorker*>(remote_sync_service_->sync_worker_.get());
   }
 
   // MetadataDatabase is normally used on the worker thread.
   // Use this only when there is no task running on the worker.
@@ skipping 1104 matching lines @@
 
   EXPECT_EQ(1u, CountApp());
   EXPECT_EQ(1u, CountLocalFile(app_id));
 
   EXPECT_EQ(2u, CountMetadata());
   EXPECT_EQ(2u, CountTracker());
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system