Get views_unittests pass on touch build

Get views_unittests pass on touch build

* Changed views test to use ViewsTestBase.
* Always calls ViewsTestBase::SetUp/TearDown. Added flags to check if this is enforced.
* Excluded tests that does not make sense on touch/pure views build.

BUG=none
TEST=views_unittets now passes on touch build, with a few exceptions below.

WidgetTest.GrabUngrab: assigned to sadrul
NativeTextfieldViewsTest.DragAndDrop_XXX: msw will look into it.

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=98128

[sadrul, 2011-08-24 20:50:22]

LGTM.

Thanks for doing this! All the touchui try/buildbots should be running
views-unittests (I keep forgetting that they aren't).

[oshima, 2011-08-24 20:59:21]

+evan for base/message_pump_x.cc change.

[oshima, 2011-08-24 21:17:44]

varunjain fixed TouchSelectionControllerImplTest, and they're enabled now.

[Ben Goodger (Google), 2011-08-24 21:21:51]

LGTM

[Evan Martin, 2011-08-24 21:27:58]

base LGTM