Remove V8_ALLOW_ACCESS_TO_RAW_HANDLE_CONSTRUCTOR.

Remove V8_ALLOW_ACCESS_TO_RAW_HANDLE_CONSTRUCTOR.

The usage of this define has been obsoleted by removal of UnsafePersistent
from Chromium.

Depends on https://codereview.chromium.org/230613005

R=dcarney@chromium.org
BUG=276323
LOG=N

Committed: https://code.google.com/p/v8/source/detail?r=20656

[vogelheim, 2014-04-09 13:57:17]

Minor cleanup. I won't be able to check-in until the usages in Chromium have
been removed, though. (That CL has been sent, too.)

[dcarney, 2014-04-09 13:58:10]

lgtm

[vogelheim, 2014-04-09 16:03:19]

The CQ bit was checked by vogelheim@chromium.org

[commit-bot: I haz the power, 2014-04-09 16:03:20]

CQ is trying da patch. Follow status at
https://v8-status.appspot.com/cq/vogelheim@chromium.org/230443004/1

[commit-bot: I haz the power, 2014-04-09 16:03:21]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-09 16:03:21]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[vogelheim, 2014-04-10 13:51:36]

Committed patchset #1 manually as r20656 (presubmit successful).