Revert of [turbofan] Optimize loads from the global object in JSTypeFeedbackSpecializer.

Revert of [turbofan] Optimize loads from the global object in JSTypeFeedbackSpecializer. (patchset #10 id:180001 of https://codereview.chromium.org/1063513003/)

Reason for revert:
[sheriff] Breaks nosnap debug:
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug%20-%201/builds/156

Original issue's description:
> [turbofan] Optimize loads from the global object in JSTypeFeedbackSpecializer.
>
> Uses lazy deoptimization and code dependencies to introduce loads
> from property cells and also to promote globals to constants.
>
> R=mstarzinger@chromium.org
> BUG=
>
> Committed: https://crrev.com/aae4a62d07e839455b1d0ad4fa512cc5d48a1a68
> Cr-Commit-Position: refs/heads/master@{#28057}

TBR=mstarzinger@chromium.org,titzer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/fbf300802f0b2dd3dcaca92790709a28216be859
Cr-Commit-Position: refs/heads/master@{#28063}

[Michael Achenbach, 2015-04-27 10:07:15]

Created Revert of [turbofan] Optimize loads from the global object in
JSTypeFeedbackSpecializer.

[commit-bot: I haz the power, 2015-04-27 10:07:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1084533003/1

[commit-bot: I haz the power, 2015-04-27 10:07:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-27 10:07:54]

Patchset 1 (id:??) landed as
https://crrev.com/fbf300802f0b2dd3dcaca92790709a28216be859
Cr-Commit-Position: refs/heads/master@{#28063}