[runtime] Remove specific Descriptor subclasses and add respective factory methods instead.

[runtime] Remove specific Descriptor subclasses and add respective factory methods instead.

This is a preliminary step for constant tracking.

BUG=v8:5495
Review-Url: https://codereview.chromium.org/2595893002
Cr-Commit-Position: refs/heads/master@{#41899}
Committed: https://chromium.googlesource.com/v8/v8/+/7cd573f4390d5840a3e2816dd8d294a8843b3d68

[Igor Sheludko, 2016-12-21 15:50:19]

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

[Igor Sheludko, 2016-12-21 15:50:20]

PTAL

[mvstanton, 2016-12-21 15:51:55]

lgtm

[Igor Sheludko, 2016-12-21 15:53:55]

The CQ bit was checked by ishell@chromium.org

[commit-bot: I haz the power, 2016-12-21 15:54:07]

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, 2016-12-21 16:40:01]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1482335635883060, "parent_rev":
"19aa7a20b0c39ea9ef81d6e021863183732f82c0", "commit_rev":
"7cd573f4390d5840a3e2816dd8d294a8843b3d68"}

[commit-bot: I haz the power, 2016-12-21 16:40:06]

Description was changed from

==========
[runtime] Remove specific Descriptor subclasses and add respective factory
methods instead.

This is a preliminary step for constant tracking.

BUG=v8:5495
==========

to

==========
[runtime] Remove specific Descriptor subclasses and add respective factory
methods instead.

This is a preliminary step for constant tracking.

BUG=v8:5495

Review-Url: https://codereview.chromium.org/2595893002
Cr-Commit-Position: refs/heads/master@{#41899}
Committed:
https://chromium.googlesource.com/v8/v8/+/7cd573f4390d5840a3e2816dd8d294a8843...
==========

[commit-bot: I haz the power, 2016-12-21 16:40:07]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/7cd573f4390d5840a3e2816dd8d294a8843...