Remove the exceptional cases to support the minimized and fullscreen state

Remove the exceptional cases to support the minimized/fullscreen state for Desktop Linux

ui::SHOW_STATE_MINIMIZED and ui::SHOW_STATE_FULLSCREEN started to be handled
in Desktop Linux when using chrome.windows.create API in r329764.

So, we can remove the exceptional cases to support the states for Desktop Linux.

BUG=459841, 473228
Committed: https://crrev.com/22231ecb82de3ad5ed6f80b81698170bc52f2991
Cr-Commit-Position: refs/heads/master@{#331726}

[joone, 2015-05-27 21:55:45]

joone.hur@intel.com changed reviewers:
+ kalman@chromium.org, tapted@chromium.org

[joone, 2015-05-27 21:55:45]

This CL was separated from https://codereview.chromium.org/1130033003/

Please take a look at this CL.

[tapted, 2015-05-27 23:20:47]

Thanks for doing this! You should have 

BUG=459841,473228

since this is related to both.

First line of CL description (and codereview subject) should mention `Desktop
Linux` -- if stuff is platform-specific this helps a lot with bisecting issues.

Then, it's usually better to mention revision numbers in git logs than
codereview URLs. i.e. say `r329764` rather than
https://codereview.chromium.org/1125383008

Otherwise, lgtm if bots are happy (started some), and the behaviour is
unchanged. But you'll need an owner too.

[not at google - send to devlin, 2015-05-27 23:28:51]

if trent is happy, then lgtm from me.

[joone, 2015-05-27 23:58:05]

Patchset #2 (id:20001) has been deleted

[joone, 2015-05-28 00:01:24]

The CQ bit was checked by joone.hur@intel.com

[commit-bot: I haz the power, 2015-05-28 00:01:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1159703006/1

[commit-bot: I haz the power, 2015-05-28 02:33:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-28 02:34:47]

Patchset 1 (id:??) landed as
https://crrev.com/22231ecb82de3ad5ed6f80b81698170bc52f2991
Cr-Commit-Position: refs/heads/master@{#331726}