The fix is to broaden the set of cases for when NeedsHomeObject()
returns true. Note that this is broader than it needs to be (since,
e.g., non-arrow function scopes inside a method can't reference
super). But we don't track the types of inner scopes at the moment,
so this is the best we can do.

R=rossberg@chromium.org
BUG=v8:4522
LOG=n

Review URL: https://codereview.chromium.org/1411093008

Cr-Commit-Position: refs/heads/master@{#31659}