Standardize usage of virtual/override/final in chrome/browser/sync_file_system/

chrome/browser/sync_file_system/drive_backend/remote_change_processor_on_worker.h

Index: chrome/browser/sync_file_system/drive_backend/remote_change_processor_on_worker.h
diff --git a/chrome/browser/sync_file_system/drive_backend/remote_change_processor_on_worker.h b/chrome/browser/sync_file_system/drive_backend/remote_change_processor_on_worker.h
index 97e27f7aa0b90fcdcb7af6677d77d086484ba094..2e68c0999ad6b4dda90a5c01814019074e0ef694 100644
--- a/chrome/browser/sync_file_system/drive_backend/remote_change_processor_on_worker.h
+++ b/chrome/browser/sync_file_system/drive_backend/remote_change_processor_on_worker.h
@@ -30,23 +30,21 @@ class RemoteChangeProcessorOnWorker : public RemoteChangeProcessor {
       const base::WeakPtr<RemoteChangeProcessorWrapper>& wrapper,
       base::SingleThreadTaskRunner* ui_task_runner,
       base::SequencedTaskRunner* worker_task_runner);
-  virtual ~RemoteChangeProcessorOnWorker();
+  ~RemoteChangeProcessorOnWorker() override;
 
-  virtual void PrepareForProcessRemoteChange(
+  void PrepareForProcessRemoteChange(
       const storage::FileSystemURL& url,
       const PrepareChangeCallback& callback) override;
-  virtual void ApplyRemoteChange(const FileChange& change,
-                                 const base::FilePath& local_path,
-                                 const storage::FileSystemURL& url,
-                                 const SyncStatusCallback& callback) override;
-  virtual void FinalizeRemoteSync(
-      const storage::FileSystemURL& url,
-      bool clear_local_changes,
-      const base::Closure& completion_callback) override;
-  virtual void RecordFakeLocalChange(
-      const storage::FileSystemURL& url,
-      const FileChange& change,
-      const SyncStatusCallback& callback) override;
+  void ApplyRemoteChange(const FileChange& change,
+                         const base::FilePath& local_path,
+                         const storage::FileSystemURL& url,
+                         const SyncStatusCallback& callback) override;
+  void FinalizeRemoteSync(const storage::FileSystemURL& url,
+                          bool clear_local_changes,
+                          const base::Closure& completion_callback) override;
+  void RecordFakeLocalChange(const storage::FileSystemURL& url,
+                             const FileChange& change,
+                             const SyncStatusCallback& callback) override;
 
   void DetachFromSequence();