Add aec-refined-adaptive-filter command line switch

Add aec-refined-adaptive-filter command line switch

The acoustic echo canceler (AEC) in WebRTC sometimes end up in bad
states. A new tuning was added to WebRTC, and should be tested on
selected platforms. This CL adds a command line switch to turn this
new tuning on or off, facilitating the testing.

Tuning added to WebRTC: https://chromium.googlesource.com/external/webrtc.git/+/0332c2db39d6f5c780ce9e92b850bcb57e24e7f8

Tuning rolled into Chrome: https://crrev.com/8cf9068d949adc9e5e5f13346f776520cbb29c4d

BUG=603411, webrtc:5777, webrtc:5778
Review URL: https://codereview.chromium.org/1894963002

Cr-Commit-Position: refs/heads/master@{#388078}
(cherry picked from commit 8ed6849361610a82033e269f1fb8fe17a179c6e6)

Committed: https://chromium.googlesource.com/chromium/src/+/e273ef95f45b184d9b8a6f94ca8be826466fc58f

[Henrik Grunell, 2016-04-29 06:49:02]

Description was changed from

==========
Add aec-refined-adaptive-filter command line switch

The acoustic echo canceler (AEC) in WebRTC sometimes end up in bad
states. A new tuning was added to WebRTC, and should be tested on
selected platforms. This CL adds a command line switch to turn this
new tuning on or off, facilitating the testing.

Tuning added to WebRTC:
https://chromium.googlesource.com/external/webrtc.git/+/0332c2db39d6f5c780ce9...

Tuning rolled into Chrome:
https://crrev.com/8cf9068d949adc9e5e5f13346f776520cbb29c4d

BUG=603411,webrtc:5777,webrtc:5778

Review URL: https://codereview.chromium.org/1894963002

Cr-Commit-Position: refs/heads/master@{#388078}
(cherry picked from commit 8ed6849361610a82033e269f1fb8fe17a179c6e6)
==========

to

==========
Add aec-refined-adaptive-filter command line switch

The acoustic echo canceler (AEC) in WebRTC sometimes end up in bad
states. A new tuning was added to WebRTC, and should be tested on
selected platforms. This CL adds a command line switch to turn this
new tuning on or off, facilitating the testing.

Tuning added to WebRTC:
https://chromium.googlesource.com/external/webrtc.git/+/0332c2db39d6f5c780ce9...

Tuning rolled into Chrome:
https://crrev.com/8cf9068d949adc9e5e5f13346f776520cbb29c4d

BUG=603411,webrtc:5777,webrtc:5778

Review URL: https://codereview.chromium.org/1894963002

Cr-Commit-Position: refs/heads/master@{#388078}
(cherry picked from commit 8ed6849361610a82033e269f1fb8fe17a179c6e6)

Committed:
https://chromium.googlesource.com/chromium/src/+/e273ef95f45b184d9b8a6f94ca8b...
==========

[Henrik Grunell, 2016-04-29 06:49:03]

Committed patchset #1 (id:1) manually as
e273ef95f45b184d9b8a6f94ca8be826466fc58f.