Revert of Make AudioSinkInterface::Data hold a const pointer to the audio buffer.

Revert of Make AudioSinkInterface::Data hold a const pointer to the audio buffer. (patchset #1 id:1 of https://codereview.webrtc.org/2873803002/ )

Reason for revert:
Reverted because it possibly breaks the internal project.

Original issue's description:
> Make AudioSinkInterface::Data hold a const pointer to the audio buffer.
> 
> This is in preparation for https://codereview.webrtc.org/2750783004/, where
> requiring a non-const pointer for AudioSinkInterface would force an unmuting
> and zeroing of every frame.
> 
> BUG=webrtc:7343
> 
> Review-Url: https://codereview.webrtc.org/2873803002
> Cr-Commit-Position: refs/heads/master@{#18107}
> Committed: https://chromium.googlesource.com/external/webrtc/+/38605965bd68ad1e376c530883041b9c12f26d3b

TBR=solenberg@webrtc.org,henrik.lundin@webrtc.org,yujo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7343
Review-Url: https://codereview.webrtc.org/2877013002
Cr-Commit-Position: refs/heads/master@{#18112}
Committed: https://chromium.googlesource.com/external/webrtc/+/c904634823fe3021d24116de246c95a7d7a2fb91

[Zhi Huang, 2017-05-12 04:21:58]

The CQ bit was checked by zhihuang@webrtc.org

[Zhi Huang, 2017-05-12 04:21:59]

Created Revert of Make AudioSinkInterface::Data hold a const pointer to the
audio buffer.

[commit-bot: I haz the power, 2017-05-12 04:22:09]

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, 2017-05-12 04:22:12]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1494562918819550, "parent_rev":
"fee0d0cf53ba5d9224fc0907a6f236afbaedf97c", "commit_rev":
"c904634823fe3021d24116de246c95a7d7a2fb91"}

[commit-bot: I haz the power, 2017-05-12 04:22:15]

Description was changed from

==========
Revert of Make AudioSinkInterface::Data hold a const pointer to the audio
buffer. (patchset #1 id:1 of https://codereview.webrtc.org/2873803002/ )

Reason for revert:
Reverted because it possibly breaks the internal project.

Original issue's description:
> Make AudioSinkInterface::Data hold a const pointer to the audio buffer.
> 
> This is in preparation for https://codereview.webrtc.org/2750783004/, where
> requiring a non-const pointer for AudioSinkInterface would force an unmuting
> and zeroing of every frame.
> 
> BUG=webrtc:7343
> 
> Review-Url: https://codereview.webrtc.org/2873803002
> Cr-Commit-Position: refs/heads/master@{#18107}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/38605965bd68ad1e376c53088...

TBR=solenberg@webrtc.org,henrik.lundin@webrtc.org,yujo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7343
==========

to

==========
Revert of Make AudioSinkInterface::Data hold a const pointer to the audio
buffer. (patchset #1 id:1 of https://codereview.webrtc.org/2873803002/ )

Reason for revert:
Reverted because it possibly breaks the internal project.

Original issue's description:
> Make AudioSinkInterface::Data hold a const pointer to the audio buffer.
> 
> This is in preparation for https://codereview.webrtc.org/2750783004/, where
> requiring a non-const pointer for AudioSinkInterface would force an unmuting
> and zeroing of every frame.
> 
> BUG=webrtc:7343
> 
> Review-Url: https://codereview.webrtc.org/2873803002
> Cr-Commit-Position: refs/heads/master@{#18107}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/38605965bd68ad1e376c53088...

TBR=solenberg@webrtc.org,henrik.lundin@webrtc.org,yujo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7343

Review-Url: https://codereview.webrtc.org/2877013002
Cr-Commit-Position: refs/heads/master@{#18112}
Committed:
https://chromium.googlesource.com/external/webrtc/+/c904634823fe3021d24116de2...
==========

[commit-bot: I haz the power, 2017-05-12 04:22:16]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/c904634823fe3021d24116de2...

[Zhi Huang, 2017-05-12 05:07:25]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/2880663003/ by zhihuang@webrtc.org.

The reason for reverting is: Re-land the original CL because the reverting it
didn't fix the problem..

[hlundin-webrtc, 2017-05-12 07:14:03]

lgtm