Remove all notion of transport from the API.

There is only a need to pass buffers in and out of the system.
All transport is external to the system.

Change-Id: I26dfc8e0b4cce9969395c96d5230078e7dca3f3d
Reviewed-on: https://skia-review.googlesource.com/119062
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Khushal Sagar <khushalsagar@google.com>
3 files changed