tree 4f40351a966128e4356538e441175fbadd67303f
parent 7ba4e96fdc18cca166cd9d1af0a3cc3bc1c82ab1
author Brandon Maxwell <maxwelb@google.com> 1455153743 -0800
committer Brandon Maxwell <maxwelb@google.com> 1455314285 -0800

Added factory to create ToneGenerators

+ This class was needed to abstract out the logic to determine which
stream to play tones though. It is also easily mockable for use.

Change-Id: I382239483871b9aa1ef6fece7e66ea95f3fba4e0