Revert of Add a whole-app-list unit test.

Revert of Add a whole-app-list unit test. (https://codereview.chromium.org/210083009/)

Reason for revert:
Broke Linux build.

http://build.chromium.org/p/chromium.linux/builders/Linux%20Builder/builds/29124/steps/compile/logs/stdio

../../ui/app_list/views/app_list_view_unittest.cc:9:39: fatal error: base/strings/string_util.h.: No such file or directory


Original issue's description:
> Add a whole-app-list unit test.
> 
> This establishes a test harness for doing tests that touch on multiple
> parts of the app launcher UI, or that need coverage for the various app
> launcher configurations: Ash or Desktop; regular or experimental
> "landscape" mode.
> 
> It currently just tests displaying and closing the app launcher in its
> default state with a flat (no folders), 2- or 3-page model.
> 
> BUG=169114
> TEST=Added unit tests AppListViewTest{Aura,Desktop}.*
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=260762

TBR=calamity@chromium.org,tapted@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=169114
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=260769

[tkent, 2014-04-01 03:36:07]

Created Revert of Add a whole-app-list unit test.

[commit-bot: I haz the power, 2014-04-01 03:36:35]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/tkent@chromium.org/220323005/1

[commit-bot: I haz the power, 2014-04-01 03:37:50]

Change committed as 260769

[tapted, 2014-04-01 03:58:35]

lgtm - thanks. And wow. How is this not an error no the microsoft compiler o_O?
-- win_rel compiled & ran all this fine. Filed http://crbug.com/356044 for the
bigger issue.