Forms: Apply 'class' syntax to 'YearListView' type

This CL has no behavior changes.

Bug: 981231
Change-Id: Ic5da7450552fa25e0f68c53aa989156b90d7713d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3486823
Auto-Submit: Kent Tamura <[email protected]>
Reviewed-by: Keishi Hattori <[email protected]>
Commit-Queue: Keishi Hattori <[email protected]>
Cr-Commit-Position: refs/heads/main@{#974932}

Author: tkent-google