This reverts commit 1169f55b.

Reason for revert: http://crbug.com/758994

Original change's description:
> Remove obsolete kNumber binop feedback.
> 
> With the removal of Crankshaft, kNumber has become obsolete as
> BinaryOperationFeedback. Turbofan uses kNumberOrOddball.
> 
> Bug: 
> Change-Id: If577f5efcc81d7c08f43908f2764ff0ec6f8747c
> Reviewed-on: https://chromium-review.googlesource.com/628376
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Mythri Alle <mythria@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47555}

TBR=jkummerow@chromium.org,jarin@chromium.org,neis@chromium.org,mythria@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: I1b33f572f3e6865e00d2468bffcce2ea466814b3
Reviewed-on: https://chromium-review.googlesource.com/637711Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47642}