Introducing the basic functionality to the speech input experimental API.

chrome/browser/extensions/extension_speech_input_api.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_SPEECH_INPUT_API_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_SPEECH_INPUT_API_H_
-#pragma once
-
-#include "chrome/browser/extensions/extension_function.h"
-#include "content/common/notification_service.h"
-
-class ExtensionSpeechInputManager;
-
-// Handles asynchronous operations such as starting or stopping speech
-// recognition in the framework of the extension API state machine.
-class SpeechInputAsyncFunction : public AsyncExtensionFunction,
-                                 public NotificationObserver {
- protected:
-  SpeechInputAsyncFunction();
-
-  virtual void Run() OVERRIDE;
-  virtual bool RunImpl() = 0;
-
- private:
-  // NotificationObserver.
-  virtual void Observe(int type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details) OVERRIDE;
-
-  NotificationRegistrar registrar_;
-};
-
-// Implements experimental.speechInput.start.
-class StartSpeechInputFunction : public SpeechInputAsyncFunction {
- protected:
-  virtual bool RunImpl() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME("experimental.speechInput.start");
-};
-
-// Implements experimental.speechInput.stop.
-class StopSpeechInputFunction : public SpeechInputAsyncFunction {
- protected:
-  virtual bool RunImpl() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME("experimental.speechInput.stop");
-};
-
-// Implements experimental.speechInput.isRecording.
-class IsRecordingSpeechInputFunction : public SyncIOThreadExtensionFunction {
- protected:
-  virtual bool RunImpl() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME("experimental.speechInput.isRecording");
-};
-
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SPEECH_INPUT_API_H_