Revert of Always optimize for adding properties to native objects.

Revert of Always optimize for adding properties to native objects. (patchset #1 id:1 of https://codereview.chromium.org/1094383004/)

Reason for revert:
GC stress failure (custom snapshot)

Original issue's description:
> Always optimize for adding properties to native objects.
>
> R=jkummerow@chromium.org
>
> Committed: https://crrev.com/c715098e85b93def76c0b3f54290c811dea04f01
> Cr-Commit-Position: refs/heads/master@{#28003}

TBR=jkummerow@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/bb6958ceff221e66adbc4581471a8ce1b41a4684
Cr-Commit-Position: refs/heads/master@{#28009}

[Yang, 2015-04-22 13:20:52]

Created Revert of Always optimize for adding properties to native objects.

[commit-bot: I haz the power, 2015-04-22 13:21:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1098223004/1

[commit-bot: I haz the power, 2015-04-22 13:23:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-22 13:24:02]

Patchset 1 (id:??) landed as
https://crrev.com/bb6958ceff221e66adbc4581471a8ce1b41a4684
Cr-Commit-Position: refs/heads/master@{#28009}

[Yang, 2015-04-22 14:13:37]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1100123002/ by yangguo@chromium.org.

The reason for reverting is: Test failure was not due to this..