Add connection manager fallback

With this CL we fallback to not using a connection manager in
two cases:
  - if the connection manager disconnects a call with
    CONNECTION_MANAGER_NOT_SUPPORTED
  - or if the connection manager crashed while creating the connection

Bug: 16903083
Change-Id: I05822991c5c34ca3533652a10fbcb8845a604925
1 file changed