[es6] Fix RegExp built-in subclassing.

[es6] Fix RegExp built-in subclassing.

1) The Map::CopyInitialMap() did not set descriptor's array if
the source initial map had one.
2) Subclasses are temporarily disallowed to have more in-object
properties than the parent class (for GC reasons).

BUG=v8:3101, v8:3330, v8:4531
LOG=N

Committed: https://crrev.com/678a5583d6e15ee81546f7e4a23a21dc5cfe8012
Cr-Commit-Position: refs/heads/master@{#31743}

[Igor Sheludko, 2015-11-02 18:22:43]

Patchset #1 (id:1) has been deleted

[Igor Sheludko, 2015-11-02 18:22:48]

Patchset #1 (id:20001) has been deleted

[Igor Sheludko, 2015-11-02 18:22:54]

Patchset #1 (id:40001) has been deleted

[Igor Sheludko, 2015-11-02 18:23:19]

Description was changed from

==========
[es6] Fix RegExp built-in subclassing.

1) The Map::CopyInitialMap() did not set descriptor's array if
the source initial map had one.
2) Subclasses are temporarily disallowed to have more in-object
properties than the parent class (for GC reasons).
3) Objects printing improved a bit.

BUG=v8:3101, v8:3330, v8:4531
LOG=N
==========

to

==========
[es6] Fix RegExp built-in subclassing.

1) The Map::CopyInitialMap() did not set descriptor's array if
the source initial map had one.
2) Subclasses are temporarily disallowed to have more in-object
properties than the parent class (for GC reasons).

BUG=v8:3101, v8:3330, v8:4531
LOG=N
==========

[Igor Sheludko, 2015-11-02 18:23:30]

The CQ bit was checked by ishell@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-11-02 18:23:39]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1431593003/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1431593003/60001

[commit-bot: I haz the power, 2015-11-02 18:24:32]

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

[commit-bot: I haz the power, 2015-11-02 18:24:32]

Dry run: Try jobs failed on following builders:
  v8_linux64_asan_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_asan_rel/builds/...)
  v8_linux_mips64el_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mips64el_compile_r...)
  v8_linux_nodcheck_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_nodcheck_rel/build...)
  v8_mac_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel/builds/11397)
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/7297)

[Igor Sheludko, 2015-11-02 19:22:20]

Patchset #1 (id:60001) has been deleted

[Igor Sheludko, 2015-11-02 19:22:39]

The CQ bit was checked by ishell@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-11-02 19:22:48]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1431593003/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1431593003/80001

[Igor Sheludko, 2015-11-02 19:27:52]

ishell@chromium.org changed reviewers:
+ verwaest@chromium.org

[Igor Sheludko, 2015-11-02 19:27:53]

PTAL

[commit-bot: I haz the power, 2015-11-02 19:47:21]

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

[commit-bot: I haz the power, 2015-11-02 19:47:22]

Dry run: This issue passed the CQ dry run.

[Toon Verwaest, 2015-11-03 09:46:48]

lgtm

[Igor Sheludko, 2015-11-03 12:14:11]

The CQ bit was checked by ishell@chromium.org

[commit-bot: I haz the power, 2015-11-03 12:14:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1431593003/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1431593003/80001

[commit-bot: I haz the power, 2015-11-03 12:15:53]

Committed patchset #1 (id:80001)

[commit-bot: I haz the power, 2015-11-03 12:16:23]

Patchset 1 (id:??) landed as
https://crrev.com/678a5583d6e15ee81546f7e4a23a21dc5cfe8012
Cr-Commit-Position: refs/heads/master@{#31743}