This CL ensures that the shadow filter is adapted at each block, which avoids that a temporary filter length mismatch can occur between the main and shadow filters. Bug: webrtc:9602,chromium:872201 Change-Id: I651812b4e3b134c6c5e1fe3df5ab78dbdb5c1fb4 Reviewed-on: https://webrtc-review.googlesource.com/93000 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24253}