Put a prototype class of DOMException

Put a prototype class of DOMException.

We have no declaration of DOMException in header files
recursively included from ErrorCallback.h.
Compiles passed well by chance.

BUG=634231
Committed: https://crrev.com/2a213fd43d3915932361089a18ffdca4390775d4
Cr-Commit-Position: refs/heads/master@{#409782}

[peria, 2016-08-04 13:04:29]

Description was changed from

==========
Put a prototype declaration

BUG=634231
==========

to

==========
Put a prototype class of DOMException.

We have no declaration of DOMException in header files
recursively included from ErrorCallback.h.
Compiles passed well by chance.


BUG=634231
==========

[peria, 2016-08-04 13:05:21]

peria@chromium.org changed reviewers:
+ haraken@chromium.org, tzik@chromium.org, yukishiino@chromium.org

[peria, 2016-08-04 13:05:22]

PTL.

[tzik, 2016-08-04 13:08:03]

lgtm

[haraken, 2016-08-04 13:09:35]

LGTM

[peria, 2016-08-04 13:12:47]

The CQ bit was checked by peria@chromium.org

[commit-bot: I haz the power, 2016-08-04 13:13:07]

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

[Yuki, 2016-08-04 13:13:20]

lgtm

[commit-bot: I haz the power, 2016-08-04 14:38:34]

Description was changed from

==========
Put a prototype class of DOMException.

We have no declaration of DOMException in header files
recursively included from ErrorCallback.h.
Compiles passed well by chance.


BUG=634231
==========

to

==========
Put a prototype class of DOMException.

We have no declaration of DOMException in header files
recursively included from ErrorCallback.h.
Compiles passed well by chance.


BUG=634231
==========

[commit-bot: I haz the power, 2016-08-04 14:38:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-04 14:41:53]

Description was changed from

==========
Put a prototype class of DOMException.

We have no declaration of DOMException in header files
recursively included from ErrorCallback.h.
Compiles passed well by chance.


BUG=634231
==========

to

==========
Put a prototype class of DOMException.

We have no declaration of DOMException in header files
recursively included from ErrorCallback.h.
Compiles passed well by chance.

BUG=634231

Committed: https://crrev.com/2a213fd43d3915932361089a18ffdca4390775d4
Cr-Commit-Position: refs/heads/master@{#409782}
==========

[commit-bot: I haz the power, 2016-08-04 14:41:54]

Patchset 1 (id:??) landed as
https://crrev.com/2a213fd43d3915932361089a18ffdca4390775d4
Cr-Commit-Position: refs/heads/master@{#409782}