[Docking] Restores docked state for tab-less browser windows

[Docking] Restores docked state for tab-less browser windows

The CL that was supposed to fix that collided in CQ with
https://codereview.chromium.org/1209033008. After that CL apps launched
in a window have SHOW_STATE_DEFAULT initially and not SHOW_STATE_NORMAL
as was assumed in https://codereview.chromium.org/1221193009.
This patch makes the code path for docked state similar to maximized
state and updates that unit test.

BUG=271582
Committed: https://crrev.com/e8561982b478352dc1d159c3b060b094c3bff3ff
Cr-Commit-Position: refs/heads/master@{#339727}

[varkha, 2015-07-21 18:30:44]

varkha@chromium.org changed reviewers:
+ oshima@chromium.org, pkasting@chromium.org

[varkha, 2015-07-21 18:30:44]

oshima@, please take a look. I have tested my previous CL before xdai@'s work so
it was broken when it got submitted. Hopefully fixed now.

pkasting@ for OWNERS.

Thanks!

[varkha, 2015-07-21 18:30:51]

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

[commit-bot: I haz the power, 2015-07-21 18:31:02]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1240393005/1

[Peter Kasting, 2015-07-21 18:40:09]

RS LGTM for OWNERS

[oshima, 2015-07-21 19:15:01]

lgtm

[commit-bot: I haz the power, 2015-07-21 19:55:12]

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

[commit-bot: I haz the power, 2015-07-21 19:55:13]

Dry run: This issue passed the CQ dry run.

[varkha, 2015-07-21 20:02:28]

The CQ bit was checked by varkha@chromium.org

[commit-bot: I haz the power, 2015-07-21 20:03:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1240393005/1

[commit-bot: I haz the power, 2015-07-21 20:10:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-21 20:12:07]

Patchset 1 (id:??) landed as
https://crrev.com/e8561982b478352dc1d159c3b060b094c3bff3ff
Cr-Commit-Position: refs/heads/master@{#339727}