Revert of for-of should throw if result object is not an object

Revert of for-of should throw if result object is not an object (patchset #4 id:60001 of https://codereview.chromium.org/929733003/)

Reason for revert:
Broke compile

Original issue's description:
> for-of should throw if result object is not an object
> 
> This is done using desugaring. Before this we had:
> 
>   result = iterator.next()
> 
> with this we instead do:
> 
>   !%_IsSpecObject(result = iterator.next()) &&
>       %ThrowIteratorResultNotAnObject(result)
> 
> BUG=v8:3916
> LOG=N
> 
> Committed: https://crrev.com/ab2591ed9332086581ee25ef735cd1b3bbd7e2f0
> Cr-Commit-Position: refs/heads/master@{#26806}

TBR=adamk@chromium.org,wingo@igalia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3916

[arv (Not doing code reviews), 2015-02-23 23:52:03]

Created Revert of for-of should throw if result object is not an object

[commit-bot: I haz the power, 2015-02-23 23:52:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/946943003/1

[commit-bot: I haz the power, 2015-02-23 23:52:32]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-02-23 23:52:32]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-02-23 23:52:33]

Failed to apply the patch.

[commit-bot: I haz the power, 2015-02-23 23:52:33]

Failed to apply the patch.