Use `CHECK_OBJECT_COERCIBLE` macro where possible

Use `CHECK_OBJECT_COERCIBLE` macro where possible

Contributed by Mathias Bynens <mathiasb@opera.com>;.

TEST=
BUG=v8:3122
LOG=N
R=arv@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=18979

[Jakob Kummerow, 2014-01-29 09:15:15]

Drive-by comments:

- we generally don't update copyright years any more
- LOG=Y is for user/embedder visible changes, not for  implementation details
(fixed that for ya)
- manually adding a "Contributed by ..." line is unnecessary, as "git cl dcommit
-c ..." does this automatically; however you may want to use your @opera.com
account for uploading patches so that whoever lands the patch for you will know
what to put there.

[mathias, 2014-01-29 09:23:05]

On 2014/01/29 09:15:15, Jakob wrote:
> Drive-by comments: […]

Thanks for the tips!

Updated the patch to not update the copyright years anymore.

[arv (Not doing code reviews), 2014-01-30 04:25:52]

LGTM

I'm not a committer so I'm adding Jakob as a reviewer. Someone on the V* team
need to land this for you.

I think Jakob meant that it would be good if you used an @opera.com email for
codereview.chromium.org.

[mathiasb, 2014-01-30 07:20:07]

> I'm not a committer so I'm adding Jakob as a reviewer. Someone on the V* team
> need to land this for you.

Thanks.

> I think Jakob meant that it would be good if you used an @opera.com email for
> http://codereview.chromium.org.

Got it – will do from now on.

Note that https://codereview.chromium.org/135493003 should probably be merged
before this change.

[Benedikt Meurer, 2014-01-31 10:05:34]

LGTM, I'll land it.

[Benedikt Meurer, 2014-01-31 10:06:05]

Committed patchset #2 manually as r18979 (presubmit successful).