Revert of GetOwnPropertyDescriptor: API-style accessors can throw, check for that.

Revert of GetOwnPropertyDescriptor: API-style accessors can throw, check for that. (patchset #1 id:1 of https://codereview.chromium.org/1412823003/ )

Reason for revert:
Breaks test if rolled into Chromium: http://build.chromium.org/p/chromium.win/buildstatus?builder=Vista%20Tests%20%281%29&number=60441

Original issue's description:
> GetOwnPropertyDescriptor: API-style accessors can throw, check for that.
>
> Committed: https://crrev.com/cbda86196b0b52694f50982ae3f1ac8e72056e6d
> Cr-Commit-Position: refs/heads/master@{#31522}

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

Committed: https://crrev.com/a0f5d4995c9edc99b97d6b3bc3e4081891eb7f91
Cr-Commit-Position: refs/heads/master@{#31532}

[Michael Hablich, 2015-10-23 19:19:33]

Created Revert of GetOwnPropertyDescriptor: API-style accessors can throw, check
for that.

[commit-bot: I haz the power, 2015-10-23 19:19:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1421483004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1421483004/1

[commit-bot: I haz the power, 2015-10-23 19:19:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-23 19:20:23]

Patchset 1 (id:??) landed as
https://crrev.com/a0f5d4995c9edc99b97d6b3bc3e4081891eb7f91
Cr-Commit-Position: refs/heads/master@{#31532}