[Hotword] Adding audio parameters to handle audio coming from the DSP.

media/audio/cras/cras_input.h

Index: media/audio/cras/cras_input.h
diff --git a/media/audio/cras/cras_input.h b/media/audio/cras/cras_input.h
index 1919224d9a9b2f77187c35a1f0a669f5aef2d629..615e4f43f33ec15e339f388e0093658de59456f3 100644
--- a/media/audio/cras/cras_input.h
+++ b/media/audio/cras/cras_input.h
@@ -51,6 +51,15 @@ class CrasInputStream : public AgcAudioStream<AudioInputStream> {
                           const timespec* sample_ts,
                           void* arg);
 
+  // This will be called by the audio server once after it recieves a wakeup
+  // and has data.
+  static int HotwordSampleReady(cras_client* client,
+                                cras_audio_format* fmt,
+                                uint8* hotword_phrase,
+                                size_t frames,
+                                const timespec* sample_ts,
+                                void* arg);
+
   // Handles notification that there was an error with the playback stream.
   static int StreamError(cras_client* client,
                          cras_stream_id_t stream_id,