Remove Object.observe UseCounter and deprecation warning

Remove Object.observe UseCounter and deprecation warning

Object.observe is long gone, remove the unreachable counter to avoid
confusion (since it references a long-gone milestone).

BUG=162553
Committed: https://crrev.com/6bc726f327493247a01876b2d19dc960ce15e805
Cr-Commit-Position: refs/heads/master@{#404942}

[Rick Byers, 2016-07-05 13:53:14]

rbyers@chromium.org changed reviewers:
+ adamk@chromium.org

[Rick Byers, 2016-07-05 13:53:15]

adamk@ PTAL

[adamk, 2016-07-12 17:19:40]

lgtm, thanks. This isn't the only dead usecounter from the v8 side, but I guess
it's the only one that has a deprecation message.

[Rick Byers, 2016-07-13 00:28:19]

On 2016/07/12 17:19:40, adamk wrote:
> lgtm, thanks. This isn't the only dead usecounter from the v8 side, but I
guess
> it's the only one that has a deprecation message.

Yeah I've just been auditing the deprecation messages so it's the only one that
hit my radar as worth the effort.

[Rick Byers, 2016-07-13 00:28:27]

The CQ bit was checked by rbyers@chromium.org

[commit-bot: I haz the power, 2016-07-13 00:34:23]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-13 03:07:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-13 03:08:28]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-13 03:08:59]

Description was changed from

==========
Remove Object.observe UseCounter and deprecation warning

Object.observe is long gone, remove the unreachable counter to avoid
confusion (since it references a long-gone milestone).

BUG=162553
==========

to

==========
Remove Object.observe UseCounter and deprecation warning

Object.observe is long gone, remove the unreachable counter to avoid
confusion (since it references a long-gone milestone).

BUG=162553

Committed: https://crrev.com/6bc726f327493247a01876b2d19dc960ce15e805
Cr-Commit-Position: refs/heads/master@{#404942}
==========

[commit-bot: I haz the power, 2016-07-13 03:09:00]

Patchset 1 (id:??) landed as
https://crrev.com/6bc726f327493247a01876b2d19dc960ce15e805
Cr-Commit-Position: refs/heads/master@{#404942}