Remove IBusUiController.

Remove IBusUiController.

IBusUiController was used as adapter of ibus_panel_service in libibus.
However libibus was gone and we can use ibus::IBusPanelCandidateWindowHandlerInterface instead.
So it's time to remove IBusUiController.

This patch should be submit after https://codereview.chromium.org/11956008/ 

BUG=None
TEST=Manually done.
TBR=jochen@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=179841

[satorux1, 2013-01-17 21:11:13]

LGTM

[commit-bot: I haz the power, 2013-01-31 05:28:05]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nona@chromium.org/11931011/4001

[commit-bot: I haz the power, 2013-01-31 05:28:09]

Presubmit check for 11931011-4001 failed and returned exit status 1.


Running presubmit commit checks ...

** Presubmit ERRORS **
Missing LGTM from an OWNER for files in these directories:
    chrome

Presubmit checks took 1.0s to calculate.

[Seigo Nonaka, 2013-01-31 06:25:51]

TBR-ing to jochen@chromium.org for gypi file.
This just remove obsolete class.

[commit-bot: I haz the power, 2013-01-31 06:28:05]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nona@chromium.org/11931011/4001

[commit-bot: I haz the power, 2013-01-31 10:23:43]

Change committed as 179841