Revert of mjsunit: Fix the error message produced by assertInstanceof.

Revert of mjsunit: Fix the error message produced by assertInstanceof. (patchset #1 id:1 of https://codereview.chromium.org/2413153004/ )

Reason for revert:
This is probably not working for falsey values. I cannot JavaScript :P

Original issue's description:
> mjsunit: Fix the error message produced by assertInstanceof.
>
> Used to be:
>
> Failure: expected <foo> is not an instance of <Bar> but of < Baz>> found <undefined>
>
> Should be:
>
> Failure: <foo> is not an instance of <Bar> but of <Baz>
>
> BUG=
>
> Committed: https://crrev.com/2a480eff395756f36eb0ae2fc0a573454b394268
> Cr-Commit-Position: refs/heads/master@{#40319}

TBR=verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/7d1a7df12091ef8476b5049e767ef2bd481c80c0
Cr-Commit-Position: refs/heads/master@{#40331}

[marja, 2016-10-15 06:33:32]

The CQ bit was checked by marja@chromium.org

[marja, 2016-10-15 06:33:33]

Created Revert of mjsunit: Fix the error message produced by assertInstanceof.

[commit-bot: I haz the power, 2016-10-15 06:33:42]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-15 06:33:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-15 06:34:23]

Description was changed from

==========
Revert of mjsunit: Fix the error message produced by assertInstanceof. (patchset
#1 id:1 of https://codereview.chromium.org/2413153004/ )

Reason for revert:
This is probably not working for falsey values. I cannot JavaScript :P

Original issue's description:
> mjsunit: Fix the error message produced by assertInstanceof.
> 
> Used to be:
> 
> Failure: expected <foo> is not an instance of <Bar> but of < Baz>> found
<undefined>
> 
> Should be:
> 
> Failure: <foo> is not an instance of <Bar> but of <Baz>
> 
> BUG=
> 
> Committed: https://crrev.com/2a480eff395756f36eb0ae2fc0a573454b394268
> Cr-Commit-Position: refs/heads/master@{#40319}

TBR=verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
==========

to

==========
Revert of mjsunit: Fix the error message produced by assertInstanceof. (patchset
#1 id:1 of https://codereview.chromium.org/2413153004/ )

Reason for revert:
This is probably not working for falsey values. I cannot JavaScript :P

Original issue's description:
> mjsunit: Fix the error message produced by assertInstanceof.
>
> Used to be:
>
> Failure: expected <foo> is not an instance of <Bar> but of < Baz>> found
<undefined>
>
> Should be:
>
> Failure: <foo> is not an instance of <Bar> but of <Baz>
>
> BUG=
>
> Committed: https://crrev.com/2a480eff395756f36eb0ae2fc0a573454b394268
> Cr-Commit-Position: refs/heads/master@{#40319}

TBR=verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/7d1a7df12091ef8476b5049e767ef2bd481c80c0
Cr-Commit-Position: refs/heads/master@{#40331}
==========

[commit-bot: I haz the power, 2016-10-15 06:34:23]

Patchset 1 (id:??) landed as
https://crrev.com/7d1a7df12091ef8476b5049e767ef2bd481c80c0
Cr-Commit-Position: refs/heads/master@{#40331}