Remove unused tags from blink::SerializationTag.

Remove unused tags from blink::SerializationTag.

These tags are no longer interpreted by Blink, so all enumerators not used
in the Blink-side logic have been removed.

BUG=690132
Review-Url: https://codereview.chromium.org/2708363003
Cr-Commit-Position: refs/heads/master@{#452283}
Committed: https://chromium.googlesource.com/chromium/src/+/d6e33a43cc4b5bd70dd69f9104fbf8d31fc31c70

[jbroman, 2017-02-22 18:44:45]

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

[jbroman, 2017-02-22 18:45:18]

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

[commit-bot: I haz the power, 2017-02-22 18:46:16]

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 20:49:32]

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

[commit-bot: I haz the power, 2017-02-22 20:49:33]

Dry run: This issue passed the CQ dry run.

[haraken, 2017-02-22 23:28:10]

LGTM

[jbroman, 2017-02-22 23:28:25]

The CQ bit was checked by jbroman@chromium.org

[commit-bot: I haz the power, 2017-02-22 23:29:39]

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 23:54:35]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487806105981370, "parent_rev":
"aaea701d3ab3168a16e45bc5ab59d181a8c871bb", "commit_rev":
"d6e33a43cc4b5bd70dd69f9104fbf8d31fc31c70"}

[commit-bot: I haz the power, 2017-02-22 23:55:12]

Description was changed from

==========
Remove unused tags from blink::SerializationTag.

These tags are no longer interpreted by Blink, so all enumerators not used
in the Blink-side logic have been removed.

BUG=690132
==========

to

==========
Remove unused tags from blink::SerializationTag.

These tags are no longer interpreted by Blink, so all enumerators not used
in the Blink-side logic have been removed.

BUG=690132

Review-Url: https://codereview.chromium.org/2708363003
Cr-Commit-Position: refs/heads/master@{#452283}
Committed:
https://chromium.googlesource.com/chromium/src/+/d6e33a43cc4b5bd70dd69f9104fb...
==========

[commit-bot: I haz the power, 2017-02-22 23:55:14]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/d6e33a43cc4b5bd70dd69f9104fb...