Revert of Add noBarrierStore to WTF and use it for spinlocks

Revert of Add noBarrierStore to WTF and use it for spinlocks (patchset #2 id:20001 of https://codereview.chromium.org/1461743002/ )

Reason for revert:
This CL broke compilation on the TSan bot.
Please consider using the linux_clang_tsan trybot or building locally with GYP_DEFINES=tsan=1 next time.

Original issue's description:
> Add noBarrierStore to WTF and use it for spinlocks
>
> This will eliminate TSAN warnings on some benign races,
> and help ensure that they remain benign.
>
> BUG=556469
>
> Committed: https://crrev.com/12678ed8e9f993cbe343ddd3d08ee174244b6552
> Cr-Commit-Position: refs/heads/master@{#360481}

TBR=haraken@chromium.org,jschuh@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=556469
Committed: https://crrev.com/cedffc5c367344c8018b791c644f9756fc88fb98
Cr-Commit-Position: refs/heads/master@{#360560}

[Alexander Potapenko, 2015-11-19 11:24:02]

Created Revert of Add noBarrierStore to WTF and use it for spinlocks

[commit-bot: I haz the power, 2015-11-19 11:24:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1457843003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1457843003/1

[commit-bot: I haz the power, 2015-11-19 11:24:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-19 11:25:24]

Patchset 1 (id:??) landed as
https://crrev.com/cedffc5c367344c8018b791c644f9756fc88fb98
Cr-Commit-Position: refs/heads/master@{#360560}

[haraken, 2015-11-19 11:50:06]

LGTM