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

media/audio/audio_parameters.h

Index: media/audio/audio_parameters.h
diff --git a/media/audio/audio_parameters.h b/media/audio/audio_parameters.h
index 03fe043dfadd53e4ae4bf75edc1e9ce5eeadcacf..3cc8ad4d8b7d603a83b7d6cff35439fd1eafd34c 100644
--- a/media/audio/audio_parameters.h
+++ b/media/audio/audio_parameters.h
@@ -51,6 +51,7 @@ class MEDIA_EXPORT AudioParameters {
     ECHO_CANCELLER = 0x1,
     DUCKING = 0x2,  // Enables ducking if the OS supports it.
     KEYBOARD_MIC = 0x4,
+    HARDWARE_INPUT = 0x8,

[dgreid, 2014/09/17 21:16:22]

Can HARDWARE_INPUT have a different name?  All the streams are hardware inputs
except loopback currently.

[rpetterson, 2014/09/17 21:32:00]

I'll change it to HOTWORD to mimic the callbacks.

   };
 
   AudioParameters();