Store audio device's active state in preference

chromeos/dbus/cras_audio_client.cc

Index: chromeos/dbus/cras_audio_client.cc
diff --git a/chromeos/dbus/cras_audio_client.cc b/chromeos/dbus/cras_audio_client.cc
index e8c3a8be93019d10094238ea9d170c874b0e6470..0f068212c99bd4fed5741a66c5dd11f49b093b07 100644
--- a/chromeos/dbus/cras_audio_client.cc
+++ b/chromeos/dbus/cras_audio_client.cc
@@ -411,6 +411,9 @@ class CrasAudioClientImpl : public CrasAudioClient {
       } else if (key == cras::kMicPositionsProperty) {
         if (!value_reader.PopString(&node->mic_positions))
           return false;
+      } else if (key == cras::kStableDeviceIdProperty) {
+        if (!value_reader.PopUint64(&node->stable_device_id))
+          return false;
       }
     }