Revert of Test and fix for huge bwe drop after alr state.

Revert of Test and fix for huge bwe drop after alr state. (patchset #13 id:320001 of https://codereview.webrtc.org/2931873002/ )

Reason for revert:
Resetting the estimate means that we need to start gathering data from scratch again. The combination of
1) DelayBasedEstimator not reacting to overuse unless there is a valid estimate of the acknowledged bitrate, and 
2) AcknowledgedBitrateEstimator needing a significant amount of time/data to obtain an provide an estimate
causes poor performance in simulations/tests. It is not clear whether this will affect real networks negatively, but I suggest reverting this to be on the safe side.
See also https://bugs.chromium.org/p/webrtc/issues/detail?id=7884

Original issue's description:
> Test and fix for huge bwe drop after alr state.
> 
> BUG=webrtc:7746
> 
> Review-Url: https://codereview.webrtc.org/2931873002
> Cr-Commit-Position: refs/heads/master@{#18692}
> Committed: https://chromium.googlesource.com/external/webrtc/+/37aa8ba61641962119071646175bfe3bc2bda063

TBR=solenberg@webrtc.org,kwiberg@webrtc.org,minyue@webrtc.org,holmer@chromium.org,philipel@webrtc.org,oprypin@webrtc.org,holmer@google.com,stefan@webrtc.org,tschumim@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:7746
Review-Url: https://codereview.webrtc.org/2964213002
Cr-Commit-Position: refs/heads/master@{#18866}
Committed: https://chromium.googlesource.com/external/webrtc/+/e75d96b5bd3a952083b60efb860706845ce0dcb7

[terelius, 2017-06-30 14:08:51]

The CQ bit was checked by terelius@webrtc.org

[terelius, 2017-06-30 14:08:52]

Created Revert of Test and fix for huge bwe drop after alr state.

[commit-bot: I haz the power, 2017-06-30 14:09:02]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-06-30 15:11:45]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498831731571330, "parent_rev":
"2d54784d890be462a7fbf0fcfdc633bc4791982a", "commit_rev":
"e75d96b5bd3a952083b60efb860706845ce0dcb7"}

[commit-bot: I haz the power, 2017-06-30 15:11:50]

Description was changed from

==========
Revert of Test and fix for huge bwe drop after alr state. (patchset #13
id:320001 of https://codereview.webrtc.org/2931873002/ )

Reason for revert:
Resetting the estimate means that we need to start gathering data from scratch
again. The combination of
1) DelayBasedEstimator not reacting to overuse unless there is a valid estimate
of the acknowledged bitrate, and 
2) AcknowledgedBitrateEstimator needing a significant amount of time/data to
obtain an provide an estimate
causes poor performance in simulations/tests. It is not clear whether this will
affect real networks negatively, but I suggest reverting this to be on the safe
side.
See also https://bugs.chromium.org/p/webrtc/issues/detail?id=7884

Original issue's description:
> Test and fix for huge bwe drop after alr state.
> 
> BUG=webrtc:7746
> 
> Review-Url: https://codereview.webrtc.org/2931873002
> Cr-Commit-Position: refs/heads/master@{#18692}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/37aa8ba616419621190716461...

TBR=solenberg@webrtc.org,kwiberg@webrtc.org,minyue@webrtc.org,holmer@chromium...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:7746
==========

to

==========
Revert of Test and fix for huge bwe drop after alr state. (patchset #13
id:320001 of https://codereview.webrtc.org/2931873002/ )

Reason for revert:
Resetting the estimate means that we need to start gathering data from scratch
again. The combination of
1) DelayBasedEstimator not reacting to overuse unless there is a valid estimate
of the acknowledged bitrate, and 
2) AcknowledgedBitrateEstimator needing a significant amount of time/data to
obtain an provide an estimate
causes poor performance in simulations/tests. It is not clear whether this will
affect real networks negatively, but I suggest reverting this to be on the safe
side.
See also https://bugs.chromium.org/p/webrtc/issues/detail?id=7884

Original issue's description:
> Test and fix for huge bwe drop after alr state.
> 
> BUG=webrtc:7746
> 
> Review-Url: https://codereview.webrtc.org/2931873002
> Cr-Commit-Position: refs/heads/master@{#18692}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/37aa8ba616419621190716461...

TBR=solenberg@webrtc.org,kwiberg@webrtc.org,minyue@webrtc.org,holmer@chromium...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:7746

Review-Url: https://codereview.webrtc.org/2964213002
Cr-Commit-Position: refs/heads/master@{#18866}
Committed:
https://chromium.googlesource.com/external/webrtc/+/e75d96b5bd3a952083b60efb8...
==========

[commit-bot: I haz the power, 2017-06-30 15:11:51]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/e75d96b5bd3a952083b60efb8...