[cleanup] Move ForEach vector feedback slots to ForInStatement

[cleanup] Move ForEach vector feedback slots to ForInStatement

The "each" slot is only actually used by ForIn, so this simply cleans
up a TODO of mine and removes an IsForOfStatement() call.

Committed: https://crrev.com/65b23ac721b5f0b162eaa2e327c77108d14dc261
Cr-Commit-Position: refs/heads/master@{#34369}

[adamk, 2016-02-27 00:20:02]

adamk@chromium.org changed reviewers:
+ littledan@chromium.org

[Dan Ehrenberg, 2016-02-29 17:00:48]

lgtm

[adamk, 2016-02-29 18:39:20]

The CQ bit was checked by adamk@chromium.org

[commit-bot: I haz the power, 2016-02-29 18:39:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1742013002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1742013002/1

[commit-bot: I haz the power, 2016-02-29 19:09:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-29 19:10:15]

Description was changed from

==========
[cleanup] Move ForEach vector feedback slots to ForInStatement

The "each" slot is only actually used by ForIn, so this simply cleans
up a TODO of mine and removes an IsForOfStatement() call.
==========

to

==========
[cleanup] Move ForEach vector feedback slots to ForInStatement

The "each" slot is only actually used by ForIn, so this simply cleans
up a TODO of mine and removes an IsForOfStatement() call.

Committed: https://crrev.com/65b23ac721b5f0b162eaa2e327c77108d14dc261
Cr-Commit-Position: refs/heads/master@{#34369}
==========

[commit-bot: I haz the power, 2016-02-29 19:10:16]

Patchset 1 (id:??) landed as
https://crrev.com/65b23ac721b5f0b162eaa2e327c77108d14dc261
Cr-Commit-Position: refs/heads/master@{#34369}