Introducing the basic functionality to the speech input experimental API.

chrome/browser/extensions/extension_speech_input_manager.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_MANAGER_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_SPEECH_INPUT_MANAGER_H_
-#pragma once
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/singleton.h"
-#include "content/common/notification_observer.h"
-#include "content/common/notification_registrar.h"
-#include <string>
-
-class Extension;
-class NotificationDetails;
-class NotificationSource;
-class Profile;
-
-// Manages the speech input requests and responses from the extensions
-// associated to the given profile.
-class ExtensionSpeechInputManager : public NotificationObserver,
-    public base::RefCountedThreadSafe<ExtensionSpeechInputManager> {
- public:
-  // Should not be used directly. Managed by a ProfileKeyedServiceFactory.
-  explicit ExtensionSpeechInputManager(Profile* profile);
-
-  // Returns the corresponding manager for the given profile, creating
-  // a new one if required.
-  static ExtensionSpeechInputManager* GetForProfile(Profile* profile);
-
-  // Initialize the ProfileKeyedServiceFactory.
-  static void InitializeFactory();
-
-  // Methods from NotificationObserver.
-  virtual void Observe(int type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details);
-
-  // Request to start speech recognition for the provided extension.
-  void Start(const Extension *extension);
-
-  // Request to stop an ongoing speech recognition.
-  void Stop(const Extension *extension);
-
-  // Called by internal ProfileKeyedService class.
-  void ShutdownOnUIThread();
-
- private:
-  void ExtensionUnloaded(const std::string& id);
-
-  friend class base::RefCountedThreadSafe<ExtensionSpeechInputManager>;
-  class Factory;
-
-  virtual ~ExtensionSpeechInputManager();
-
-  Profile* profile_;
-  scoped_refptr<Extension> extension_;
-  NotificationRegistrar registrar_;
-};
-
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SPEECH_INPUT_MANAGER_H_