38fd1758e9
This CL adds the first layer of the echo canceller 3. All of the code is as it should, apart from block_processor.* which only contains placeholder functionality. (Upcoming CLs will add proper functionality into those files.) BUG=webrtc:6018 Review-Url: https://codereview.webrtc.org/2584493002 Cr-Commit-Position: refs/heads/master@{#15861}