Per feedback from API council. Bug: 26508215 Change-Id: Ic2f142a6df023bcb75ee2f91abafa9e0c35fd3bd
Also includes changing the name of the sample from caption overlay to general multi window sample directory. Bug: 26141281 Change-Id: I8dca42c4af14b13cf874f0ac1ee6c5fad23aeceb