Brokerized ReduceJSCreateEmptyLiteralObject and added the scope
for ReduceJSCreateLiteralArrayOrObject.

Bug: v8:7790
Change-Id: Ife34a6b610678a3fe24152151cf343400ee515bd
Reviewed-on: https://chromium-review.googlesource.com/1140306
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54507}