perf(slider): convert slider adapters to class objects

[ngwattcos]

Converts slider adapter to class object to reduce memory usage. Adds several methods to work around private fields and methods.

Edit: performance improvements should be comparable to #19980

[devversion]

Do we have any data of impact for this? Generally, I like this a lot, but would be nice to see if this is actually having a noticeable impact on performance.

[kseamon]

Do we have any data of impact for this? Generally, I like this a lot, but would be nice to see if this is actually having a noticeable impact on performance.

When I asked Scott to take this on, I saw in the Chrome memory profiler that at the very least we could save hundreds of bytes per instance by doing this. Scott is going to do some performance comparisons, so we'll see the effect on CPU time soon.

[devversion]

Should we hold off with this PR? The MDC team released a new slider implementation that we soon are going to wrap. This involves a completely different adapter and we'll need to make the adapter a noop anyway for now (to get our CI green until we wrap the new reworked slider MDC component). See: #20054

[andrewseguin]

We will soon be taking out our dependency on the adapters provided by MDC since they won't be supported later. Thank you for your contribution, sorry we weren't able to land this

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}