For now keep the logic in compiler.cc and add a DCHECK that the scopes
and compiler.cc agree.

Use this knowledge to only created ScopeInfos for literals we'll
actually compile.

BUG=v8:5394,v8:5422
R=marja@chromium.org,verwaest@chromium.org

Review-Url: https://codereview.chromium.org/2399833002
Cr-Commit-Position: refs/heads/master@{#40074}