Revert of Conversational speech tool, simualtor + unit tests

Revert of Conversational speech tool, simualtor + unit tests (patchset #12 id:220001 of https://codereview.webrtc.org/2790933002/ )

Reason for revert:
Compile Error.

Original issue's description:
> The simulator puts into action the schedule of speech turns encoded in a MultiEndCall instance. The output is a set of audio track pairs. There is one set for each speaker and each set contains one near-end and one far-end audio track. The tracks are directly written into wav files instead of creating them in memory. To speed up the creation of the output wav files, *all* the source audio tracks (i.e., the atomic speech turns) are pre-loaded.
> 
> The ConversationalSpeechTest.MultiEndCallSimulator unit test defines a conversational speech sequence and creates two wav files (with pure tones at 440 and 880 Hz) that are used as atomic speech turn tracks.
> 
> This CL also patches MultiEndCall in order to allow input audio tracks with same sample rate and single channel only.
> 
> BUG=webrtc:7218
> 
> Review-Url: https://codereview.webrtc.org/2790933002
> Cr-Commit-Position: refs/heads/master@{#18480}
> Committed: https://chromium.googlesource.com/external/webrtc/+/6b648c4697cede14605fd2b89425866eec5f7c79

TBR=minyue@webrtc.org,alessiob@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7218
Review-Url: https://codereview.webrtc.org/2925123003
Cr-Commit-Position: refs/heads/master@{#18481}
Committed: https://chromium.googlesource.com/external/webrtc/+/4c72cf43dfda9255468102ce4b4c520571d8f455

[charujain, 2017-06-07 18:58:51]

The CQ bit was checked by charujain@webrtc.org

[charujain, 2017-06-07 18:58:52]

Created Revert of Conversational speech tool, simualtor + unit tests

[commit-bot: I haz the power, 2017-06-07 18:59:05]

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, 2017-06-07 18:59:10]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1496861931575440, "parent_rev":
"6b648c4697cede14605fd2b89425866eec5f7c79", "commit_rev":
"4c72cf43dfda9255468102ce4b4c520571d8f455"}

[commit-bot: I haz the power, 2017-06-07 18:59:13]

Description was changed from

==========
Revert of Conversational speech tool, simualtor + unit tests (patchset #12
id:220001 of https://codereview.webrtc.org/2790933002/ )

Reason for revert:
Compile Error.

Original issue's description:
> The simulator puts into action the schedule of speech turns encoded in a
MultiEndCall instance. The output is a set of audio track pairs. There is one
set for each speaker and each set contains one near-end and one far-end audio
track. The tracks are directly written into wav files instead of creating them
in memory. To speed up the creation of the output wav files, *all* the source
audio tracks (i.e., the atomic speech turns) are pre-loaded.
> 
> The ConversationalSpeechTest.MultiEndCallSimulator unit test defines a
conversational speech sequence and creates two wav files (with pure tones at 440
and 880 Hz) that are used as atomic speech turn tracks.
> 
> This CL also patches MultiEndCall in order to allow input audio tracks with
same sample rate and single channel only.
> 
> BUG=webrtc:7218
> 
> Review-Url: https://codereview.webrtc.org/2790933002
> Cr-Commit-Position: refs/heads/master@{#18480}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/6b648c4697cede14605fd2b89...

TBR=minyue@webrtc.org,alessiob@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7218
==========

to

==========
Revert of Conversational speech tool, simualtor + unit tests (patchset #12
id:220001 of https://codereview.webrtc.org/2790933002/ )

Reason for revert:
Compile Error.

Original issue's description:
> The simulator puts into action the schedule of speech turns encoded in a
MultiEndCall instance. The output is a set of audio track pairs. There is one
set for each speaker and each set contains one near-end and one far-end audio
track. The tracks are directly written into wav files instead of creating them
in memory. To speed up the creation of the output wav files, *all* the source
audio tracks (i.e., the atomic speech turns) are pre-loaded.
> 
> The ConversationalSpeechTest.MultiEndCallSimulator unit test defines a
conversational speech sequence and creates two wav files (with pure tones at 440
and 880 Hz) that are used as atomic speech turn tracks.
> 
> This CL also patches MultiEndCall in order to allow input audio tracks with
same sample rate and single channel only.
> 
> BUG=webrtc:7218
> 
> Review-Url: https://codereview.webrtc.org/2790933002
> Cr-Commit-Position: refs/heads/master@{#18480}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/6b648c4697cede14605fd2b89...

TBR=minyue@webrtc.org,alessiob@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7218

Review-Url: https://codereview.webrtc.org/2925123003
Cr-Commit-Position: refs/heads/master@{#18481}
Committed:
https://chromium.googlesource.com/external/webrtc/+/4c72cf43dfda9255468102ce4...
==========

[commit-bot: I haz the power, 2017-06-07 18:59:14]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/4c72cf43dfda9255468102ce4...

[AleBzk, 2017-06-08 07:43:31]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/2930853002/ by alessiob@webrtc.org.

The reason for reverting is: google3 compilation error fix.