Reland "Use C++ implementation of Object.definePropert{y,ies}"

Reland "Use C++ implementation of Object.definePropert{y,ies}"

This reverts commit 581ead5c8ceeb0e4ee2049d78972418236f5d3ba.

Committed: https://crrev.com/034f4a6ae14cd5c29ceddbdb8f9af179803ca793
Cr-Commit-Position: refs/heads/master@{#31473}

[Jakob Kummerow, 2015-10-22 11:43:01]

jkummerow@chromium.org changed reviewers:
+ verwaest@chromium.org

[Jakob Kummerow, 2015-10-22 11:43:01]

Here we go again.

[Toon Verwaest, 2015-10-22 11:57:15]

lgtm

[Jakob Kummerow, 2015-10-22 12:45:34]

The CQ bit was checked by jkummerow@chromium.org

[commit-bot: I haz the power, 2015-10-22 12:45:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1413123004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1413123004/20001

[commit-bot: I haz the power, 2015-10-22 13:16:36]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-22 13:16:52]

Patchset 2 (id:??) landed as
https://crrev.com/034f4a6ae14cd5c29ceddbdb8f9af179803ca793
Cr-Commit-Position: refs/heads/master@{#31473}

[Michael Hablich, 2015-10-23 19:23:58]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/1421123002/ by hablich@chromium.org.

The reason for reverting is: Breaks test if rolled into Chromium:
http://build.chromium.org/p/chromium.win/buildstatus?builder=Vista%20Tests%20....