This reverts commit 64534fd917.
Reason for revert: no longer necessary.
Original change's description:
> Make HardwareVideo*Factory ctors that take fallbackToSoftware public.
>
> https://webrtc-review.googlesource.com/c/src/+/17480 changed the default behavior of HardwareVideoEncoderFactory and HardwareVideoDecoderFactory without providing any way to maintain the previous behavior. This breaks current users.
>
> Making these constructors public at least gives existing users a way to maintain the previous behavior.
>
> Bug: webrtc:7925
> Change-Id: Id8f0ec25026592f5e9096ac5f39fdda22993ff09
> Reviewed-on: https://webrtc-review.googlesource.com/22763
> Reviewed-by: Anders Carlsson <andersc@webrtc.org>
> Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
> Commit-Queue: Bjorn Mellem <mellem@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#20675}
TBR=magjed@webrtc.org,sakal@webrtc.org,andersc@webrtc.org,mellem@webrtc.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: webrtc:7925
Change-Id: Ia467337a3916371a619e1d238e1dd03aa0e19261
Reviewed-on: https://webrtc-review.googlesource.com/23380
Reviewed-by: Bjorn Mellem <mellem@webrtc.org>
Commit-Queue: Sami Kalliomäki <sakal@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20695}
c48badaed6