The following revision refers to this bug:
  https://webrtc.googlesource.com/src.git/+/78ea818864c5b16b5568d19aa4b751a65817c67e

commit 78ea818864c5b16b5568d19aa4b751a65817c67e
Author: Per Åhgren <peah@webrtc.org>
Date: Thu Jun 07 13:35:40 2018

AEC3: Added filter preprocessing to avoid low frequency artefacts

This filter preprocess the time domain representation of the adaptive
linear filter to avoid low-frequency components causing issues in
the filter analysis.

Bug:  webrtc:9343 ,  chromium:848231 
Change-Id: I40494959f1b76242a7c9f2a2fc85c2ad4af9e164
Reviewed-on: https://webrtc-review.googlesource.com/79142
Commit-Queue: Per Åhgren <peah@webrtc.org>
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23536}
[modify] https://crrev.com/78ea818864c5b16b5568d19aa4b751a65817c67e/modules/audio_processing/aec3/filter_analyzer.cc
[modify] https://crrev.com/78ea818864c5b16b5568d19aa4b751a65817c67e/modules/audio_processing/aec3/filter_analyzer.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3596e65961370cfb3618ee256d1b90dd636d09c1

commit 3596e65961370cfb3618ee256d1b90dd636d09c1
Author: webrtc-chromium-autoroll <webrtc-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Date: Fri Jun 08 00:02:49 2018

Roll src/third_party/webrtc 81327d5..ed51a6e (12 commits)

https://webrtc.googlesource.com/src.git/+log/81327d5..ed51a6e


git log 81327d5..ed51a6e --date=short --no-merges --format='%ad %ae %s'
2018-06-07 gustaf@webrtc.org AEC3: Avoid static initializers
2018-06-07 peah@webrtc.org AEC3: Delay stabilization after a delay change
2018-06-07 peah@webrtc.org AEC3: Added filter preprocessing to avoid low frequency artefacts
2018-06-07 magjed@webrtc.org Android: Throw exception in CallSessionFileRotatingLogSink if dir is null
2018-06-07 gustaf@webrtc.org AEC3: Improved anti-aliasing filter for DSF 4
2018-06-07 mbonadei@webrtc.org Removing warning suppression flags from test/.
2018-06-07 mbonadei@webrtc.org Re-enabling SanitizerTest.MsanUninitialized.
2018-06-07 srte@webrtc.org Fixing issue where pacer budget increased in congestion.
2018-06-07 asapersson@webrtc.org Remove unused methods in VCMDecoderDataBase.
2018-06-07 nisse@webrtc.org Delete unused stats for preferred_bitrate.
2018-06-07 gustaf@webrtc.org AEC3: Move decimator filters to the new notation
2018-06-07 nisse@webrtc.org Delete RTP-specific values from the VideoCodecType enum.


Created with:
  gclient setdep -r src/third_party/webrtc@ed51a6e

The AutoRoll server is located here: https://webrtc-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_archive_rel_ng;master.tryserver.chromium.mac:mac_chromium_archive_rel_ng

BUG= chromium:846615 , chromium:850451 , chromium:848231 ,chromium:b/106732994,chromium:846615,chromium:none,chromium:846615,chromium:None
TBR=webrtc-chromium-sheriffs-robots@google.com

Change-Id: I5fa6c8ebdf457e84a74bc440a044f50ba4915e21
Reviewed-on: https://chromium-review.googlesource.com/1091287
Reviewed-by: webrtc-chromium-autoroll <webrtc-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: webrtc-chromium-autoroll <webrtc-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#565471}
[modify] https://crrev.com/3596e65961370cfb3618ee256d1b90dd636d09c1/DEPS

We would like to merge this to M68. It has been tested in Canary and works well. 

The feature is only active beneath a Finch flag and can therefore be turned off if it would go wrong. Furthermore, a kill-switch was added that allows specifically turning off the added functionality.

The CL we would like to merge is:
-https://webrtc-review.googlesource.com/79142

This bug requires manual review: DEPS changes referenced in bugdroid comments.
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), kariahda@(iOS), bhthompson@(ChromeOS), abdulsyed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Approving merge for M68. Branch:3440

The merge is completed.
The merging CL was 
-https://webrtc-review.googlesource.com/c/src/+/83500

This issue has been approved for a merge. Please merge the fix to any appropriate branches as soon as possible!

If all merges have been completed, please remove any remaining Merge-Approved labels from this issue.

Thanks for your time! To disable nags, add the Disable-Nags label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Pls merge you change to M68 branch 3440 ASAP so we can pick it up for this week Beta release. Merge has to happen latest by 1:00 PM PT tomorrow, Tuesday (06/19), so we can pick it up for Wednesday Beta release.

The change was merged as of #7.