X87: Remove receiver conversion from function prologue.

X87: Remove receiver conversion from function prologue.

  port 4ab1b05d5ec15f25085383e34e3b326bdbf990fc (r31826).

  original commit message:
  Depends on https://codereview.chromium.org/1407373007/
  After that CL, all receiver conversion is handled by the call builtin.

BUG=

Committed: https://crrev.com/da72ba0b3eef3556ed6b6e7428cc4a652925d75c
Cr-Commit-Position: refs/heads/master@{#31849}

[zhengxing.li, 2015-11-06 02:51:54]

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

[Weiliang, 2015-11-06 02:53:02]

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

[Weiliang, 2015-11-06 02:53:02]

lgtm

[commit-bot: I haz the power, 2015-11-06 02:53:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1419563006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1419563006/1

[commit-bot: I haz the power, 2015-11-06 03:12:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-06 03:12:48]

Patchset 1 (id:??) landed as
https://crrev.com/da72ba0b3eef3556ed6b6e7428cc4a652925d75c
Cr-Commit-Position: refs/heads/master@{#31849}