https://chromiumdash.appspot.com/components/Blink/CSS is the URL in the above screenshot.

We have a KI where deleted components still show up in the results.  I've got a TODO to write up a module that looks for these, and deletes them on a somewhat regular basis; once it's implemented I'll update this bug and this should be fixed.

Thanks for the report!

See soon to be duped issue for more on this.

 Issue 714857  has been merged into this issue.

Current state here:
 - Deprecated components are no longer updated; however, they are not deleted, and they are still shown
 - Deleted components persist indefinitely

Proposed implementation:
 - Add deprecated field to component model
 - Show a UI indicator (perhaps italics, or a lead [DEPRECATED] in front of name) that component is deprecated
 - Delete components that no longer exist at all.

This will help motivate teams to actually delete deprecated components and update labels accordingly.

 Issue 738090  has been merged into this issue.

Deleted components no longer appear on the staging instance; when we migrate the app to the new infrastructure, you'll no longer see them listed.  Renaming this and moving to a polish issue to track handling deprecated components.

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/infra/infra_internal/+/143e1a337cee5f1bbc0ebe9a8d2ebb3048d0a678

commit 143e1a337cee5f1bbc0ebe9a8d2ebb3048d0a678
Author: Alex Mineer <amineer@google.com>
Date: Sat Oct 14 19:47:27 2017