Binding media stream audio track to speech recognition [browser]

content/public/browser/speech_recognition_event_listener.h

Index: content/public/browser/speech_recognition_event_listener.h
diff --git a/content/public/browser/speech_recognition_event_listener.h b/content/public/browser/speech_recognition_event_listener.h
index 8c16f9099cf56eea5563507eeff08d9a69b2d2be..0b634727ed0cd917941f6feb33f6ac1ad41b42cf 100644
--- a/content/public/browser/speech_recognition_event_listener.h
+++ b/content/public/browser/speech_recognition_event_listener.h
@@ -6,9 +6,15 @@
 #define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_EVENT_LISTENER_H_
 
 #include "base/basictypes.h"
+#include "base/memory/shared_memory.h"
+#include "base/sync_socket.h"
 #include "content/common/content_export.h"
 #include "content/public/common/speech_recognition_result.h"
 
+namespace media {
+class AudioParameters;
+}
+
 namespace content {
 
 struct SpeechRecognitionError;
@@ -58,6 +64,14 @@ class CONTENT_EXPORT SpeechRecognitionEventListener {
   virtual void OnAudioLevelsChange(int session_id,
                                    float volume, float noise_volume) = 0;
 
+  // TODO(burnik): Update comment.
+  // Invoked when using an audio track to signal back to the browser.
+  virtual void OnSharedAudioBusReady(
+      int session_id,
+      const media::AudioParameters& params,
+      const base::SharedMemoryHandle memory,
+      const base::SyncSocket::TransitDescriptor socket) = 0;
+
   // This is guaranteed to be the last event raised in the recognition
   // process and the |SpeechRecognizer| object can be freed if necessary.
   virtual void OnRecognitionEnd(int session_id) = 0;