Revert of Eliminate the dependence of tts extension API for tts_controller.cc

Revert of Eliminate the dependence of tts extension API for tts_controller.cc (https://codereview.chromium.org/181123004/)

Reason for revert:
Breakes ChromeVox spoken feedback on OOBE.

Original issue's description:
> Eliminate the dependence of tts extension API for tts_controller.cc
> 
> This is the first patch to move TTS implementation from browser layer
> to content. To move TTS to conent, the direct dependence of browser
> compoent should be eliminated from TTS classes first.
> 
> R=tommi@chromium.org, dmazzoni@chromium.org, sky@chromium.org
> BUG=347045
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=254740

TBR=dmazzoni@chromium.org,tommi@chromium.org,sky@chromium.org,chun.gao@intel.com
NOTREECHECKS=true
NOTRY=true
BUG=347045
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=255354

[merkulova, 2014-03-06 14:53:37]

Created Revert of Eliminate the dependence of tts extension API for
tts_controller.cc

[commit-bot: I haz the power, 2014-03-06 14:53:45]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-06 14:53:46]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Nikita (slow), 2014-03-06 14:54:38]

lgtm

[Nikita (slow), 2014-03-06 14:54:43]

The CQ bit was checked by nkostylev@chromium.org

[commit-bot: I haz the power, 2014-03-06 14:54:55]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/merkulova@chromium.org/188633003/1

[commit-bot: I haz the power, 2014-03-06 14:55:40]

Change committed as 255354