[Sync] ModelTypeCount UMA doesn't include server-side only unapplied entries

Use server-side ModelTypeCount when it did not apply yet.

BUG=571488
Committed: https://crrev.com/aca8ba5b170cf01bbbc3d43d1b2ac87062af6d64
Cr-Commit-Position: refs/heads/master@{#367023}

[Gang Wu, 2015-12-28 21:08:52]

Description was changed from

==========
the fix

BUG=
==========

to

==========
Use server-side ModelTypeCount when it did not apply yet.

BUG=571488
==========

[Gang Wu, 2015-12-28 21:08:52]

gangwu@chromium.org changed reviewers:
+ stanisc@chromium.org

[Gang Wu, 2015-12-28 21:58:54]

Please take a look.

[stanisc, 2015-12-28 22:18:42]

lgtm

[Gang Wu, 2015-12-28 23:08:19]

The CQ bit was checked by gangwu@chromium.org

[Gang Wu, 2015-12-28 23:08:20]

The patchset sent to the CQ was uploaded after l-g-t-m from stanisc@chromium.org
Link to the patchset: https://codereview.chromium.org/1554443002/#ps20001
(title: "start from 0")

[commit-bot: I haz the power, 2015-12-28 23:08:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1554443002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1554443002/20001

[commit-bot: I haz the power, 2015-12-28 23:47:09]

Description was changed from

==========
Use server-side ModelTypeCount when it did not apply yet.

BUG=571488
==========

to

==========
Use server-side ModelTypeCount when it did not apply yet.

BUG=571488
==========

[commit-bot: I haz the power, 2015-12-28 23:47:09]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-12-28 23:48:08]

Description was changed from

==========
Use server-side ModelTypeCount when it did not apply yet.

BUG=571488
==========

to

==========
Use server-side ModelTypeCount when it did not apply yet.

BUG=571488

Committed: https://crrev.com/aca8ba5b170cf01bbbc3d43d1b2ac87062af6d64
Cr-Commit-Position: refs/heads/master@{#367023}
==========

[commit-bot: I haz the power, 2015-12-28 23:48:09]

Patchset 2 (id:??) landed as
https://crrev.com/aca8ba5b170cf01bbbc3d43d1b2ac87062af6d64
Cr-Commit-Position: refs/heads/master@{#367023}