Add tests to MultimediaViewer

These are just smoke tests. I will add more in coming versions of this change.
Consolidated various cases in one tests. Added tests to validate for legit clicks.

Based on Idfbec829399ff6969cd01be3c13a8ed7a66a1fef

Change-Id: I366c7af9a5cf43361d8293183c9da117bc5d4971
Merge "Add tests to MultimediaViewer"