Original review at https://codereview.webrtc.org/1180423006 SystemDelayTests was not updated w.r.t. extended_filter mode and some tests were disabled on Android since DA-AEC is automatically set. All tests have now been updated for both extended_filter mode as well as DA-AEC, hence are now enabled on Android. Also * Moves default settings of extended_filter and DA-AEC form Init() to Create() to avoid unintentional loss of state during a reset. * Fixes a potential bug of starting from scratch in extended_filter mode + DA-AEC. This reverts commit 01c9b012e9171c813ace9e405c32fc75f4262bf6. BUG= R=henrik.lundin@webrtc.org Review URL: https://codereview.webrtc.org/1187943005. Cr-Commit-Position: refs/heads/master@{#9458}