Merge to M65: Increased the size of the delay estimation look window

(cherry picked from commit 75b57d3bb894aa51da3a4bcf1bb455785b7a4098)

TBR: gustaf@webrtc.org,henrik.lundin@webrtc.org
Bug: webrtc:8889,chromium:812524
Change-Id: I508a0d3619b90f6a8851db66c151a980b14adb55
Reviewed-on: https://webrtc-review.googlesource.com/53640
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Commit-Queue: Per Åhgren <peah@webrtc.org>
Cr-Original-Commit-Position: refs/heads/master@{#22030}
Reviewed-on: https://webrtc-review.googlesource.com/54900
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/branch-heads/65@{#23}
Cr-Branched-From: 3ac67a736bb200ecf7c116a88b2f8d5c542973c8-refs/heads/master@{#21637}