Introducing the basic functionality to the speech input experimental API.

chrome/browser/extensions/extension_speech_input_api.h

Index: chrome/browser/extensions/extension_speech_input_api.h
diff --git a/chrome/browser/extensions/extension_speech_input_api.h b/chrome/browser/extensions/extension_speech_input_api.h
index 46b8db3ffcbdf03717385c4d82ec57794ce07221..b4a1c940294059debacff1103180fa6700c52cd9 100644
--- a/chrome/browser/extensions/extension_speech_input_api.h
+++ b/chrome/browser/extensions/extension_speech_input_api.h
@@ -21,6 +21,11 @@ class SpeechInputAsyncFunction : public AsyncExtensionFunction,
   virtual void Run() OVERRIDE;
   virtual bool RunImpl() = 0;
 
+  virtual int StartState() = 0;

[Satish, 2011/10/08 23:15:07]

it may be simpler to define 4 const integers as member variables in this class
and initialize them in the derived class constructor.

[Leandro Graciá Gil, 2011/10/09 10:29:21]

Done.

+  virtual int TransitionState() = 0;
+  virtual int EndState() = 0;
+  virtual int TransitionNotification() = 0;
+
  private:
   // NotificationObserver.
   virtual void Observe(int type,
@@ -28,6 +33,7 @@ class SpeechInputAsyncFunction : public AsyncExtensionFunction,
                        const NotificationDetails& details) OVERRIDE;
 
   NotificationRegistrar registrar_;
+  bool failed_;
 };
 
 // Implements experimental.speechInput.start.
@@ -35,6 +41,11 @@ class StartSpeechInputFunction : public SpeechInputAsyncFunction {
  protected:
   virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.speechInput.start");
+
+  virtual int StartState() OVERRIDE;
+  virtual int TransitionState() OVERRIDE;
+  virtual int EndState() OVERRIDE;
+  virtual int TransitionNotification() OVERRIDE;
 };
 
 // Implements experimental.speechInput.stop.
@@ -42,10 +53,15 @@ class StopSpeechInputFunction : public SpeechInputAsyncFunction {
  protected:
   virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.speechInput.stop");
+
+  virtual int StartState() OVERRIDE;
+  virtual int TransitionState() OVERRIDE;
+  virtual int EndState() OVERRIDE;
+  virtual int TransitionNotification() OVERRIDE;
 };
 
 // Implements experimental.speechInput.isRecording.
-class IsRecordingSpeechInputFunction : public SyncIOThreadExtensionFunction {
+class IsRecordingSpeechInputFunction : public SyncExtensionFunction {
  protected:
   virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.speechInput.isRecording");