Reason for revert:
This was a workaround to help Chrome wire up the googNoiseReduction constraint. However, it was fixed in a different way in Chrome, and this hack is not actually needed.
Original issue's description:
> Add method cricket::VideoCapturer::NeedsDenoising, use in VideoCapturerTrackSource.
>
> BUG=chromium:645907
>
> Committed: https://crrev.com/0d14c6abba19295725519ce38105688ae0a62513
> Cr-Commit-Position: refs/heads/master@{#14219}
TBR=pbos@webrtc.org,hta@webrtc.org,perkj@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:645907
Review-Url: https://codereview.webrtc.org/2433293003
Cr-Commit-Position: refs/heads/master@{#14729}
Every message will now be traced with the location from which it was
posted, including function name, file and line number.
This CL also writes a normal LOG message when the dispatch took more
than a certain amount of time (currently 50ms).
This logging should help us identify messages that are taking
longer than expected to be dispatched.
R=pthatcher@webrtc.org, tommi@webrtc.org
Review URL: https://codereview.webrtc.org/2019423006 .
Cr-Commit-Position: refs/heads/master@{#13104}
Moved VideoSourceInterface to MediaStreamInterface.h
Renamed VideoSourceTest to VideoCapturerTrackSourceTest
Renamed VideoSource to VideoCaptureTrackSource and cl lint and cl format.
BUG=webrtc:5426
TBR=pthatcher@webrtc.org
Review URL: https://codereview.webrtc.org/1770003002 .
Cr-Commit-Position: refs/heads/master@{#11893}
