Fix custom styled transient scrollbars

Change-Id: I41d86f2f27e4250361c4fad21dd37995e5cbbc3d
Reviewed-by: Caroline Chao <caroline.chao@digia.com>
Fix tst_styles name

Change-Id: I68664c5be3b465a4eea82685356f20c39a113d78
Reviewed-by: Caroline Chao <caroline.chao@digia.com>