Revert of - Clean up unused voice engine DTMF code.

Revert of - Clean up unused voice engine DTMF code. (patchset #4 id:60001 of https://codereview.webrtc.org/1722253002/ )

Reason for revert:
Breaks Chromium FYI bots for Android. E.g. https://build.chromium.org/p/chromium.webrtc.fyi/builders/Android%20Tests%20%28dbg%29%20%28K%20Nexus5%29/builds/4486/steps/content_browsertests/logs/stdio

Original issue's description:
> - Clean up unused voice engine DTMF code following removal of VoEDtmf APIs.
> - Use better types in AudioSendStream::SendTelephoneEvent() and related methods.
>
> BUG=webrtc:4690
>
> Committed: https://crrev.com/8886c816582a7c6190c5429222cb8096fca302a6
> Cr-Commit-Position: refs/heads/master@{#11927}

TBR=tina.legrand@webrtc.org,henrik.lundin@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4690
Committed: https://crrev.com/3ecb5c869842ddfccab35e3111a8e415a47e2b5b
Cr-Commit-Position: refs/heads/master@{#11930}

[the sun, 2016-03-09 15:31:42]

Created Revert of - Clean up unused voice engine DTMF code.

[commit-bot: I haz the power, 2016-03-09 15:31:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1776243003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1776243003/1

[commit-bot: I haz the power, 2016-03-09 15:32:03]

Description was changed from

==========
Revert of - Clean up unused voice engine DTMF code. (patchset #4 id:60001 of
https://codereview.webrtc.org/1722253002/ )

Reason for revert:
Breaks Chromium FYI bots for Android. E.g.
https://build.chromium.org/p/chromium.webrtc.fyi/builders/Android%20Tests%20%...


Original issue's description:
> - Clean up unused voice engine DTMF code following removal of VoEDtmf APIs.
> - Use better types in AudioSendStream::SendTelephoneEvent() and related
methods.
> 
> BUG=webrtc:4690
> 
> Committed: https://crrev.com/8886c816582a7c6190c5429222cb8096fca302a6
> Cr-Commit-Position: refs/heads/master@{#11927}

TBR=tina.legrand@webrtc.org,henrik.lundin@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4690
==========

to

==========
Revert of - Clean up unused voice engine DTMF code. (patchset #4 id:60001 of
https://codereview.webrtc.org/1722253002/ )

Reason for revert:
Breaks Chromium FYI bots for Android. E.g.
https://build.chromium.org/p/chromium.webrtc.fyi/builders/Android%20Tests%20%...


Original issue's description:
> - Clean up unused voice engine DTMF code following removal of VoEDtmf APIs.
> - Use better types in AudioSendStream::SendTelephoneEvent() and related
methods.
> 
> BUG=webrtc:4690
> 
> Committed: https://crrev.com/8886c816582a7c6190c5429222cb8096fca302a6
> Cr-Commit-Position: refs/heads/master@{#11927}

TBR=tina.legrand@webrtc.org,henrik.lundin@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4690
==========

[commit-bot: I haz the power, 2016-03-09 15:32:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-09 15:32:08]

Description was changed from

==========
Revert of - Clean up unused voice engine DTMF code. (patchset #4 id:60001 of
https://codereview.webrtc.org/1722253002/ )

Reason for revert:
Breaks Chromium FYI bots for Android. E.g.
https://build.chromium.org/p/chromium.webrtc.fyi/builders/Android%20Tests%20%...


Original issue's description:
> - Clean up unused voice engine DTMF code following removal of VoEDtmf APIs.
> - Use better types in AudioSendStream::SendTelephoneEvent() and related
methods.
> 
> BUG=webrtc:4690
> 
> Committed: https://crrev.com/8886c816582a7c6190c5429222cb8096fca302a6
> Cr-Commit-Position: refs/heads/master@{#11927}

TBR=tina.legrand@webrtc.org,henrik.lundin@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4690
==========

to

==========
Revert of - Clean up unused voice engine DTMF code. (patchset #4 id:60001 of
https://codereview.webrtc.org/1722253002/ )

Reason for revert:
Breaks Chromium FYI bots for Android. E.g.
https://build.chromium.org/p/chromium.webrtc.fyi/builders/Android%20Tests%20%...

Original issue's description:
> - Clean up unused voice engine DTMF code following removal of VoEDtmf APIs.
> - Use better types in AudioSendStream::SendTelephoneEvent() and related
methods.
>
> BUG=webrtc:4690
>
> Committed: https://crrev.com/8886c816582a7c6190c5429222cb8096fca302a6
> Cr-Commit-Position: refs/heads/master@{#11927}

TBR=tina.legrand@webrtc.org,henrik.lundin@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4690

Committed: https://crrev.com/3ecb5c869842ddfccab35e3111a8e415a47e2b5b
Cr-Commit-Position: refs/heads/master@{#11930}
==========

[commit-bot: I haz the power, 2016-03-09 15:32:09]

Patchset 1 (id:??) landed as
https://crrev.com/3ecb5c869842ddfccab35e3111a8e415a47e2b5b
Cr-Commit-Position: refs/heads/master@{#11930}

[hlundin-webrtc, 2016-03-09 15:34:15]

lgtm