# 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=""" """