17338d41ac
The mock is used in a dependent CL https://codereview.webrtc.org/2436033002. There is also a goal to allow external mixing implementations (subclasses of webrtc::AudioMixer) and inject them to PeerConnectionFactory. We think that part of that is an official and maintained mock. Summary of changes: * Created a mixer mock/stub in webrtc/api/test * Made a target webrtc/api:mock_audio_mixer for it. NOTRY=True BUG=webrtc:6346 Review-Url: https://codereview.webrtc.org/2520323002 Cr-Commit-Position: refs/heads/master@{#15190}