Added a button hitting method to AbstractTB3Test.

Refactored LayoutTesterApplicationTest.
Refactored SliderDisableTest.

Change-Id: I038fedb9d234656b85359ce7fb778b001e6f4402
Merge changes from origin/7.1

1571143 Added a button hitting method to AbstractTB3Test.

Change-Id: Ia294bd09ae143f81a6331b6bec5736b72acfea89
Merge "Merge changes from origin/7.1"