Revert of Enable ChannelMojo

Revert of Enable ChannelMojo (patchset #3 id:40001 of https://codereview.chromium.org/857483004/)

Reason for revert:
many ipc test failed.
https://build.chromium.org/p/chromium.memory/builders/Linux%20ASan%20LSan%20Tests%20%281%29/builds/10036

Original issue's description:
> Enable ChannelMojo
>
> As we addressed certain amount of the performance problem,
> it's time to give it another try.
>
> R=viettrungluu@chromium.org
> BUG=377980
>
> Committed: https://crrev.com/a06cd1b2fe83b51b0874ca504066f00a17192026
> Cr-Commit-Position: refs/heads/master@{#313184}

TBR=viettrungluu@chromium.org,morrita@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=377980
Committed: https://crrev.com/af01416ada7b968c55224be9e61272ad73e59fe1
Cr-Commit-Position: refs/heads/master@{#313225}

[yoichio, 2015-01-27 04:14:50]

Created Revert of Enable ChannelMojo

[commit-bot: I haz the power, 2015-01-27 04:15:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/875333002/1

[commit-bot: I haz the power, 2015-01-27 04:16:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-27 04:18:37]

Patchset 1 (id:??) landed as
https://crrev.com/af01416ada7b968c55224be9e61272ad73e59fe1
Cr-Commit-Position: refs/heads/master@{#313225}

[Hajime Morrita, 2015-01-27 18:55:11]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/881863002/ by morrita@chromium.org.

The reason for reverting is: This revert was innocent. The culprit was
https://codereview.chromium.org/878843002/.