Revert "X87: Resolve references to "this" the same way as normal variables"

Revert "X87: Resolve references to "this" the same way as normal variables"

This reverts commit 6eea252463648d81cf3ae128e6f0d5f815a108bb.

revert reason:
   original patch is reverted.

BUG=

Committed: https://crrev.com/19a421c694d2aaa6314dd19d25b55de4507bb56d
Cr-Commit-Position: refs/heads/master@{#28401}

[chunyang.dai, 2015-05-14 08:56:18]

chunyang.dai@intel.com changed reviewers:
+ weiliang.lin@intel.com

[chunyang.dai, 2015-05-14 08:56:19]

PTAL.

[Weiliang, 2015-05-14 08:57:55]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-05-14 08:57:56]

lgtm

[commit-bot: I haz the power, 2015-05-14 08:58:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1130853007/1

[commit-bot: I haz the power, 2015-05-14 09:23:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-14 09:23:11]

Patchset 1 (id:??) landed as
https://crrev.com/19a421c694d2aaa6314dd19d25b55de4507bb56d
Cr-Commit-Position: refs/heads/master@{#28401}