2c7c3a60e7
This involved replacing PathMapper with the wrapper, PreviewPathMapper, and MigrationInfo, with the wrapper, PreviewMigrationInfo. Change-Id: Ie590c298bfa8c64c4765748b42ce3c9dc0dec3d6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128107 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>