Revert of Refactor CreateApiFunction (patchset #2 id:20001 of https://codereview.chromium.org/2095953002/ )

Reason for revert:
[Sheriff] Changes a layout test. Please rebase upstream if intended:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/7742

Original issue's description:
> Refactor CreateApiFunction
>
> BUG=
>
> Committed: https://crrev.com/705574970f3899a6eda0c61130c8c31693df4039
> Cr-Commit-Position: refs/heads/master@{#37290}

TBR=jochen@chromium.org,verwaest@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=

Review-Url: https://codereview.chromium.org/2099983004
Cr-Commit-Position: refs/heads/master@{#37299}