This CL adds metrics reporting to AEC3. BUG=webrtc:6018 Review-Url: https://codereview.webrtc.org/2722453002 Cr-Commit-Position: refs/heads/master@{#16929}
This CL adds the remaining code for the first version of EchoCanceller3. TBR=aleloi@webrtc.org BUG=webrtc:6018 Review-Url: https://codereview.webrtc.org/2678423005 Cr-Commit-Position: refs/heads/master@{#16801}