| # This database migration does nothing. It works as a replacement for a reverted | |
| # migrate CL: https://chromium-review.googlesource.com/#/c/253760 | |
| # For routine database migration revert, a new CL should be added to add | |
| # DOWN_SQL of the reverted migration as UP_SQL. However, in that CL's case, | |
| # DOWN_SQL is not available. | |
| # The dummy migration avoid the requirement to manually downgrade migrate_info | |
| # in each database. | |
| UP_SQL = """ | |
| """ | |
| DOWN_SQL=""" | |
| """ | |