Converts RtcpDemuxerTest to use a test fixture which creates the
RtcpDemuxer under test and wraps sink adding functions to
automatically remove added sinks at the end of the test case.
Also adds domain-specific expectation macros to improve readability
of test cases.
Bug: None
Change-Id: I2416ce67c4fc8edc9ecc2cc98d191562c3bf81e4
Reviewed-on: https://chromium-review.googlesource.com/601049
Commit-Queue: Steve Anton <steveanton@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Elad Alon <eladalon@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19417}
801830691a