Merge "Add DocumentsUITests.apk to MTS to get coverage data." into qt-dev am: 6da09f9c77 am: c436b73c8a am: 4c70e05004 am: 513de764f1
am: c41fdfa33a

Change-Id: Ib118cba336c9bbc2df18be0f543d2388039c0350