[ios] Change WebStateList serialization method to use SessionWindowIOS.

[ios] Change WebStateList serialization method to use SessionWindowIOS.

In order to properly save and restore the application state in the new
architecture, (partially) move the implementation outside of TabModel
(which is not used in the new architecture).

BUG=710848, 723665
NOTRY=true
NOPRESUBMIT=true
TBR=sdefresne@chromium.org

Review-Url: https://codereview.chromium.org/2808773004
Cr-Original-Commit-Position: refs/heads/master@{#465969}
Review-Url: https://codereview.chromium.org/2897333002
Cr-Commit-Position: refs/branch-heads/3071@{#686}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/da2e896aee0b0b634c064cb3ad2ed4d71a38349e

[kkhorimoto, 2017-05-24 20:45:39]

Description was changed from

==========
[ios] Change WebStateList serialization method to use SessionWindowIOS.

In order to properly save and restore the application state in the new
architecture, (partially) move the implementation outside of TabModel
(which is not used in the new architecture).

BUG=710848

Review-Url: https://codereview.chromium.org/2808773004
Cr-Commit-Position: refs/heads/master@{#465969}
(cherry picked from commit 68f546a315406dfa72656a6bd2a6d73ff4269ec2)
==========

to

==========
[ios] Change WebStateList serialization method to use SessionWindowIOS.

In order to properly save and restore the application state in the new
architecture, (partially) move the implementation outside of TabModel
(which is not used in the new architecture).

BUG=710848, 723665

Review-Url: https://codereview.chromium.org/2808773004
Cr-Commit-Position: refs/heads/master@{#465969}
(cherry picked from commit 68f546a315406dfa72656a6bd2a6d73ff4269ec2)
==========

[kkhorimoto, 2017-05-24 21:00:09]

Description was changed from

==========
[ios] Change WebStateList serialization method to use SessionWindowIOS.

In order to properly save and restore the application state in the new
architecture, (partially) move the implementation outside of TabModel
(which is not used in the new architecture).

BUG=710848, 723665

Review-Url: https://codereview.chromium.org/2808773004
Cr-Commit-Position: refs/heads/master@{#465969}
(cherry picked from commit 68f546a315406dfa72656a6bd2a6d73ff4269ec2)
==========

to

==========
[ios] Change WebStateList serialization method to use SessionWindowIOS.

In order to properly save and restore the application state in the new
architecture, (partially) move the implementation outside of TabModel
(which is not used in the new architecture).

BUG=710848, 723665
NOTRY=true
NOPRESUBMIT=true
TBR=sdefresne@chromium.org

Review-Url: https://codereview.chromium.org/2808773004
Cr-Commit-Position: refs/heads/master@{#465969}
(cherry picked from commit 68f546a315406dfa72656a6bd2a6d73ff4269ec2)
==========

[kkhorimoto, 2017-05-24 21:00:15]

The CQ bit was checked by kkhorimoto@chromium.org

[commit-bot: I haz the power, 2017-05-24 21:01:02]

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, 2017-05-24 21:02:57]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1495659615229250,
"parent_rev": "cf2b7470eef6f2af442b63a8e6739e916212b8e3", "commit_rev":
"da2e896aee0b0b634c064cb3ad2ed4d71a38349e"}

[commit-bot: I haz the power, 2017-05-24 21:03:11]

Description was changed from

==========
[ios] Change WebStateList serialization method to use SessionWindowIOS.

In order to properly save and restore the application state in the new
architecture, (partially) move the implementation outside of TabModel
(which is not used in the new architecture).

BUG=710848, 723665
NOTRY=true
NOPRESUBMIT=true
TBR=sdefresne@chromium.org

Review-Url: https://codereview.chromium.org/2808773004
Cr-Commit-Position: refs/heads/master@{#465969}
(cherry picked from commit 68f546a315406dfa72656a6bd2a6d73ff4269ec2)
==========

to

==========
[ios] Change WebStateList serialization method to use SessionWindowIOS.

In order to properly save and restore the application state in the new
architecture, (partially) move the implementation outside of TabModel
(which is not used in the new architecture).

BUG=710848, 723665
NOTRY=true
NOPRESUBMIT=true
TBR=sdefresne@chromium.org

Review-Url: https://codereview.chromium.org/2808773004
Cr-Original-Commit-Position: refs/heads/master@{#465969}
Review-Url: https://codereview.chromium.org/2897333002
Cr-Commit-Position: refs/branch-heads/3071@{#686}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/da2e896aee0b0b634c064cb3ad2e...
==========

[commit-bot: I haz the power, 2017-05-24 21:03:12]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/da2e896aee0b0b634c064cb3ad2e...