Revert 232412 "Implement Google network speech synthesis."

Revert 232412 "Implement Google network speech synthesis."

> Implement Google network speech synthesis.
> 
> See bug for context. Implements a component extension
> that provides speech synthesis using Google's speech
> synthesis API.
> 
> Adds a "remote" flag to the TTS and TTS Engine APIs
> so that it's possible for clients to distinguish
> between local and remote speech engines.
> 
> Adds a new private extension API to expose Google's
> API key, needed to make the request.
> 
> BUG=308250
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=232242
> 
> Review URL: https://codereview.chromium.org/27034009

TBR=dmazzoni@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=235464

[dmazzoni, 2013-11-15 23:11:50]

Committed patchset #1 manually as r235464.