X87: Fix object initialization when slack tracking for it's map is still enabled.

X87: Fix object initialization when slack tracking for it's map is still enabled.

  port 2fc2cb99f52974d0743610189213a94585c30ac6 (r32144)

  original commit message:
  The old code was not ready for properly initialize objects with non standard headers and non zero in-object properties number.

  MacroAssembler::Allocate() implementations now return both start and end addresses of the new object (done by parameter renaming).

BUG=

Committed: https://crrev.com/d23330d49647d3b179c1213fe8fd95540f1b9fe4
Cr-Commit-Position: refs/heads/master@{#32161}

[zhengxing.li, 2015-11-23 02:26:13]

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

[Weiliang, 2015-11-23 02:57:09]

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

[Weiliang, 2015-11-23 02:57:10]

lgtm

[commit-bot: I haz the power, 2015-11-23 02:57:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1467923002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1467923002/1

[commit-bot: I haz the power, 2015-11-23 03:16:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-23 03:17:32]

Patchset 1 (id:??) landed as
https://crrev.com/d23330d49647d3b179c1213fe8fd95540f1b9fe4
Cr-Commit-Position: refs/heads/master@{#32161}