Revert of Update mojo sdk to rev 8af2ccff2eee4bfca1043015abee30482a030b30

Revert of Update mojo sdk to rev 8af2ccff2eee4bfca1043015abee30482a030b30 (patchset #4 id:60001 of https://codereview.chromium.org/910883002/)

Reason for revert:
Build failure:

http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win%20x64%20Builder%20%28dbg%29/builds/39460

Original issue's description:
> Update mojo sdk to rev 8af2ccff2eee4bfca1043015abee30482a030b30
>
> Also apply mojo 8fda9302f51f99dc25e6e0c95cfd0a04e1adc802 (https://codereview.chromium.org/902783004/).
>
> Also apply mojo e62ed5fbf8bb4d7cfa87f499b1d1b50bdf8e0b3b (https://codereview.chromium.org/905253005/).
>
> Also apply dcf5a5e1dbccb91f774d545b5f31d06042d8a8e3 (https://codereview.chromium.org/909903003/).
>
> TBR=jamesr@chromium.org
> NOPRESUBMIT=true
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win8_chromium_gn_dbg,win8_chromium_gn_rel
>
> Committed: https://crrev.com/2e86fb9356e3a693762d3c86c70e63951bd9d1be
> Cr-Commit-Position: refs/heads/master@{#315432}

TBR=jamesr@chromium.org,viettrungluu@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/6edaec3e96636afe78e4464539a030177c6b7ed0
Cr-Commit-Position: refs/heads/master@{#315440}

[jiayl, 2015-02-09 23:42:29]

Created Revert of Update mojo sdk to rev
8af2ccff2eee4bfca1043015abee30482a030b30

[commit-bot: I haz the power, 2015-02-09 23:43:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/890843003/1

[commit-bot: I haz the power, 2015-02-09 23:44:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-09 23:45:42]

Patchset 1 (id:??) landed as
https://crrev.com/6edaec3e96636afe78e4464539a030177c6b7ed0
Cr-Commit-Position: refs/heads/master@{#315440}