The following revision refers to this bug:
  https://webrtc.googlesource.com/src.git/+/78026754a73496542b3e7bba7153385d7acc3613

commit 78026754a73496542b3e7bba7153385d7acc3613
Author: Per Åhgren <peah@webrtc.org>
Date: Wed Aug 01 15:20:33 2018

AEC3: Utilize shadow filter output to respond to audio path changes

This CL adds functionality to use the shadow filter output instead
of the main filter output for cases when the former is better than
the latter. One case when that happens is when there have been an
echo path change, either in the acoustic path, in the audio buffers
or due to some active audio processing effects being applied on
the device.

The CL causes less echo leaks, in particular on devices with
active render processing.

Bug:  webrtc:9581 , chromium:869821 
Change-Id: Icb8df1b94141598da82dc188051ac59e43338938
Reviewed-on: https://webrtc-review.googlesource.com/91820
Reviewed-by: Sam Zackrisson <saza@webrtc.org>
Commit-Queue: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24166}
[modify] https://crrev.com/78026754a73496542b3e7bba7153385d7acc3613/modules/audio_processing/aec3/echo_remover.cc
[modify] https://crrev.com/78026754a73496542b3e7bba7153385d7acc3613/modules/audio_processing/aec3/subtractor.cc
[modify] https://crrev.com/78026754a73496542b3e7bba7153385d7acc3613/modules/audio_processing/aec3/subtractor_output.cc
[modify] https://crrev.com/78026754a73496542b3e7bba7153385d7acc3613/modules/audio_processing/aec3/subtractor_output.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f6b97f6b0b6137c6df70d131b463d74b7c807700

commit f6b97f6b0b6137c6df70d131b463d74b7c807700
Author: webrtc-chromium-autoroll <webrtc-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Date: Wed Aug 01 17:55:18 2018

Roll src/third_party/webrtc 7a1c7f782a14..78026754a734 (2 commits)

https://webrtc.googlesource.com/src.git/+log/7a1c7f782a14..78026754a734


git log 7a1c7f782a14..78026754a734 --date=short --no-merges --format='%ad %ae %s'
2018-08-01 peah@webrtc.org AEC3: Utilize shadow filter output to respond to audio path changes
2018-08-01 oprypin@webrtc.org Explicitly add -mfpu=neon to all targets that use NEON


Created with:
  gclient setdep -r src/third_party/webrtc@78026754a734

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=luci.chromium.try:linux_chromium_archive_rel_ng;master.tryserver.chromium.mac:mac_chromium_archive_rel_ng

BUG= chromium:869821 
TBR=webrtc-chromium-sheriffs-robots@google.com

Change-Id: I50a4664af22308ac41d58db2390bf766493e546b
Reviewed-on: https://chromium-review.googlesource.com/1158786
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@{#579856}
[modify] https://crrev.com/f6b97f6b0b6137c6df70d131b463d74b7c807700/DEPS

We would like to merge this issue into M69. 
It addresses an echo canceller issue that appears on devices that have render playout effects. The issue has surfaced due to recent improvements on transparency and was detected during testing of Chrome Canary.

It has been tested in Chrome Canary and both the manual testing results and the metrics look good. The merge is considered to be very safe, as the feature is only active beneath an experiment flag, and also has a specific kill-switch.


The CL that would be part of the merge is
-https://webrtc-review.googlesource.com/91820

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

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

Approving merge to M69 branch 3497 based on comment #3. Please merge ASAP. Thank you.

Thanks!

This has now been merged to M69.

The merging CL was:
-https://webrtc-review.googlesource.com/c/src/+/92394

 Issue 844044  has been merged into this issue.