Update BufferHubQueueProducer

This is the second step to make BufferHub parcelable. There will be one
last CL actually use the parcelable BufferHubQueueProducer in
android::Surface and android::view::Surface to wrap thigns up.

1/ Remove BufferHubQueueProducer::Create(), as there is no real use case
for that at all.
2/ Add support for taking out underlying dvr::ProducerQueueParcelable
with proper safety check.
3/ Update tests to cover the end-to-end case of sending BufferHub-backed
IGBP over binder.

Bug: 37517761
Bug: 63909629
Test: buffer_hub_queue_producer-test
Change-Id: I06ca04b6a8ac1fb15d61ce7884990c3aca1c29ed