The CreateClosureMode introduced with 2ece046c is still not 100%
fail-safe and doesn't scale. What we really need instead, especially
when we might start removing the SharedFunctionInfo::code field
eventually, is to tell the JSCreateClosure node which code object to
use. So instead of adding magic around it, let's just pass it to the
node.

Bug: v8:2206, v8:7253, v8:7310
Change-Id: Iedb6ae468a763643617975f47d96854d1aeafbe9
Reviewed-on: https://chromium-review.googlesource.com/937121Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51548}