This reverts commit 5fefa970.

Reason for revert: They are used via CodeT https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20-%20external%20code%20space%20-%20debug%20-%20builder/124/overview

Original change's description:
> [compiler] Remove unused CodeDataContainerRef/Data classes
>
> Bug: v8:7790
> Change-Id: I072823ea40b0bd64aaf4a14882603cef29edcf22
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2992722
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75456}

Bug: v8:7790
Change-Id: I2c7f65c8a772de9967ce5b3aa78d1f46c9c99866
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2996188Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75462}