Revert of Make the simple QUIC client able to resolve hosts.

Revert of Make the simple QUIC client able to resolve hosts. (patchset #7 id:120001 of https://codereview.chromium.org/1004173004/)

Reason for revert:
Build failure: http://build.chromium.org/p/chromium.win/builders/Win%20x64%20Builder%20%28dbg%29/builds/7147/steps/compile/logs/stdio

Original issue's description:
> Make the simple QUIC client able to resolve hosts.
> Implement a SynchronousHostResolver for this purpose.
>
> Committed: https://crrev.com/acfb2f91085d5291ba1c9a04dbe7aea610b13e33
> Cr-Commit-Position: refs/heads/master@{#321688}

TBR=rtenneti@chromium.org,rch@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/ca74cd29f03fe4c114a4fcad3efef7b3496d95f8
Cr-Commit-Position: refs/heads/master@{#321702}

[pfeldman, 2015-03-21 13:15:14]

Created Revert of Make the simple QUIC client able to resolve hosts.

[commit-bot: I haz the power, 2015-03-21 13:15:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1025133002/1

[commit-bot: I haz the power, 2015-03-21 13:16:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-21 13:16:55]

Patchset 1 (id:??) landed as
https://crrev.com/ca74cd29f03fe4c114a4fcad3efef7b3496d95f8
Cr-Commit-Position: refs/heads/master@{#321702}