Remove dual stream functionality in ACM

This is old code that is no longer in use. The clean-up is part of the
ACM redesign work. With this change, there is no longer need for the
ProcessDualStream method, which is removed. Consequently, the method
ProcessSingleStream is renamed to Process.


Review URL:

git-svn-id: 4adac7df-926f-26a2-2b94-8c16560cd09d
5 files changed