Remove on-by-default flag --harmony-object

Remove on-by-default flag --harmony-object

It's been enabled since M45, which is now well into its stable period,
with no problems reported.

Committed: https://crrev.com/7462e99667b9d8636fa4f3b1c1faf88d3b0bf88d
Cr-Commit-Position: refs/heads/master@{#30835}

[adamk, 2015-09-17 23:41:11]

adamk@chromium.org changed reviewers:
+ caitpotter88@gmail.com, rossberg@chromium.org

[caitp (gmail), 2015-09-18 02:35:44]

It's feature-complete, just not as fast as we'd like it to be, so there's no
real problem with removing the flag, afaik.

As far as I can tell, it doesn't look like any uses of the flag are missing.
Looks good to me.

[rossberg, 2015-09-18 05:50:12]

lgtm

[adamk, 2015-09-18 18:36:05]

The CQ bit was checked by adamk@chromium.org

[commit-bot: I haz the power, 2015-09-18 18:36:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1356793002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1356793002/1

[commit-bot: I haz the power, 2015-09-18 18:37:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-18 18:38:03]

Patchset 1 (id:??) landed as
https://crrev.com/7462e99667b9d8636fa4f3b1c1faf88d3b0bf88d
Cr-Commit-Position: refs/heads/master@{#30835}