This removes the DefaultAudioProcessingFactory, PostProcessingFactory and DefaultAudioProcessingFactoryTest classes and leaves the interface AudioProcessingFactory without any default implementation (as the default APM is already created by the PeerConnectionFactory JNI).
Bug: webrtc:8701
Change-Id: I259108afbc5b24cab5161485f45af4236f775c18
Reviewed-on: https://webrtc-review.googlesource.com/37220
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Commit-Queue: Sam Zackrisson <saza@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21577}
aa6b24f23c