Revert of Move RegisterDomain/UnregisterDomain and its handling to inspector_websocket.

Revert of Move RegisterDomain/UnregisterDomain and its handling to inspector_websocket. (patchset #3 id:90001 of https://codereview.chromium.org/729833002/)

Reason for revert:
This may be the reason why stack trace is lost.

Original issue's description:
> Move RegisterDomain/UnregisterDomain and its handling to inspector_websocket.
> Add unit tests.
>
> BUG=423954
>
> Committed: https://crrev.com/79602d53643589ef1ce19cb115b1c91df4d5789f
> Cr-Commit-Position: refs/heads/master@{#304448}

TBR=dtu@chromium.org,chrishenry@google.com

BUG=423954, 433966
Committed: https://crrev.com/8f622c4297d559d3ae17ed70d6ceabba97038920
Cr-Commit-Position: refs/heads/master@{#304497}

[nednguyen, 2014-11-17 21:14:57]

Created Revert of Move RegisterDomain/UnregisterDomain and its handling to
inspector_websocket.

[nednguyen, 2014-11-17 21:17:02]

The CQ bit was checked by nednguyen@google.com

[commit-bot: I haz the power, 2014-11-17 21:18:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/734733002/1

[chrishenry, 2014-11-17 21:52:16]

lgtm, thanks

[commit-bot: I haz the power, 2014-11-17 22:22:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-17 22:23:15]

Patchset 1 (id:??) landed as
https://crrev.com/8f622c4297d559d3ae17ed70d6ceabba97038920
Cr-Commit-Position: refs/heads/master@{#304497}