Reason for revert: Interface change in the mock breaks downstream code. Original issue's description: > The current scheme for setting parameters and specifying the behavior > of the audio processing module is quite complex and hard to implement > in a threadsafe and efficient manner. Therefore a new scheme for setting > the parameters in the audio processing module is introduced in this CL. > > The idea is to roll this scheme out gradually and as a first functionality > in the audio processing module where this is applied the level controller > was chosen. This CL includes the replacement of the Config-based > level controller scheme with the new scheme. > > BUG=webrtc:5298 > > Committed: https://crrev.com/c8bbe3fe9aad9e9a1189a42dcaa8f5d6c261ecc8 > Cr-Commit-Position: refs/heads/master@{#14171} TBR=solenberg@webrtc.org,henrik.lundin@webrtc.org,peah@webrtc.org BUG=webrtc:5298 NOTRY=True Review-Url: https://codereview.webrtc.org/2334583002 Cr-Commit-Position: refs/heads/master@{#14177}