- Removed PASS/FAIL line for arrow/rest params test which should now pass.
- Moved soon-to-be-changed tests about built-in prototypes as plain objects
  to INVALID section (and noted that they'll be fixed with the
  next test262 roll).

R=littledan@chromium.org

Review URL: https://codereview.chromium.org/1450243002

Cr-Commit-Position: refs/heads/master@{#32020}