Revert of Check the current thread in AudioManagerBase::MakeAudio{Output,Input}Stream (patchset #3 id:40001 of https://codereview.chromium.org/1376313002/ )
Revert of Check the current thread in AudioManagerBase::MakeAudio{Output,Input}Stream (patchset #3 id:40001 of https://codereview.chromium.org/1376313002/ )

Reason for revert:
Seems to break some audio tests.
See https://code.google.com/p/chromium/issues/detail?id=539362

Original issue's description:
> Check the current thread in AudioManagerBase::MakeAudio{Output,Input}Stream
>
> BUG=
> TEST=
> R=tommi@chromium.org,henrika@chromium.org,miu@chromium.org
>
> Committed: https://crrev.com/ca3ac60f80128160b38d099e0c319667cdc60719
> Cr-Commit-Position: refs/heads/master@{#352276}

TBR=miu@chromium.org,tommi@chromium.org,ki.stfu@gmail.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1384983002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#352326}

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