ValueSerializer: Add an explicit tag for host objects.

ValueSerializer: Add an explicit tag for host objects.

This makes it no longer necessary to ensure that V8 and Blink have non-colliding
tags, which makes it easier for them to evolve independently, and also makes
the wire format more suitable for other V8 embedders, who would not
necessarily be surveyed before V8 introduced a new tag that might collide
with theirs.

BUG=chromium:686159
Review-Url: https://codereview.chromium.org/2709023003
Cr-Commit-Position: refs/heads/master@{#43466}
Committed: https://chromium.googlesource.com/v8/v8/+/6543519977b2012b58a4ffef28b8527db404fbdb

[jbroman, 2017-02-22 20:28:36]

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

[commit-bot: I haz the power, 2017-02-22 20:28:41]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[jbroman, 2017-02-22 20:35:21]

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

[commit-bot: I haz the power, 2017-02-22 20:35:28]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[jbroman, 2017-02-22 20:50:55]

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

[commit-bot: I haz the power, 2017-02-22 20:50:58]

Dry run: 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, 2017-02-22 21:13:52]

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

[commit-bot: I haz the power, 2017-02-22 21:13:53]

Dry run: This issue passed the CQ dry run.

[jbroman, 2017-02-23 20:32:58]

jbroman@chromium.org changed reviewers:
+ jkummerow@chromium.org

[jbroman, 2017-02-23 20:32:59]

PTAL

[Jakob Kummerow, 2017-02-24 13:55:28]

lgtm

[jbroman, 2017-02-28 01:50:58]

The CQ bit was checked by jbroman@chromium.org

[commit-bot: I haz the power, 2017-02-28 01:51:07]

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, 2017-02-28 02:16:30]

CQ is committing da patch.

Bot data: {"patchset_id": 40001, "attempt_start_ts": 1488246658233100,
"parent_rev": "7f5701507d96c1eddd2ba6e3a86ef1f382a5b4f8", "commit_rev":
"6543519977b2012b58a4ffef28b8527db404fbdb"}

[commit-bot: I haz the power, 2017-02-28 02:16:36]

Description was changed from

==========
ValueSerializer: Add an explicit tag for host objects.

This makes it no longer necessary to ensure that V8 and Blink have non-colliding
tags, which makes it easier for them to evolve independently, and also makes
the wire format more suitable for other V8 embedders, who would not
necessarily be surveyed before V8 introduced a new tag that might collide
with theirs.

BUG=chromium:686159
==========

to

==========
ValueSerializer: Add an explicit tag for host objects.

This makes it no longer necessary to ensure that V8 and Blink have non-colliding
tags, which makes it easier for them to evolve independently, and also makes
the wire format more suitable for other V8 embedders, who would not
necessarily be surveyed before V8 introduced a new tag that might collide
with theirs.

BUG=chromium:686159

Review-Url: https://codereview.chromium.org/2709023003
Cr-Commit-Position: refs/heads/master@{#43466}
Committed:
https://chromium.googlesource.com/v8/v8/+/6543519977b2012b58a4ffef28b8527db40...
==========

[commit-bot: I haz the power, 2017-02-28 02:16:37]

Committed patchset #3 (id:40001) as
https://chromium.googlesource.com/v8/v8/+/6543519977b2012b58a4ffef28b8527db40...