Since that condition doesn't depend on anything other than the SFI,
the IsInlineable method is the right place for checking it. This also
has the benefit that the condition will get checked earlier so that we
might avoid unnecessary work.

Bug: v8:7790
Change-Id: Ie92d4b72c6c524c5e8412701b88e88c9d73fa5bd
Reviewed-on: https://chromium-review.googlesource.com/c/1470061
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59559}