[tab_under] Add UI expectations to browser tests

This change also moves more tests from interactive_ui_tests to
browser_tests since they don't really need to be interactive_ui_tests.

Bug: 661629
Change-Id: I24b1c4badf848826adf6db4511ddfb1368eb60e0
Reviewed-on: https://chromium-review.googlesource.com/806686
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Charlie Harrison <csharrison@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521705}
2 files changed