Handle audio node stable device ID change

extensions/browser/api/audio/audio_service_chromeos.cc

Index: extensions/browser/api/audio/audio_service_chromeos.cc
diff --git a/extensions/browser/api/audio/audio_service_chromeos.cc b/extensions/browser/api/audio/audio_service_chromeos.cc
index 0a17972dd544123031d89b802cde5b35cce32f2e..4bae2c034c9a94be9213e5fefa7193d93fcb0bdb 100644
--- a/extensions/browser/api/audio/audio_service_chromeos.cc
+++ b/extensions/browser/api/audio/audio_service_chromeos.cc
@@ -23,6 +23,17 @@ using api::audio::OutputDeviceInfo;
 using api::audio::InputDeviceInfo;
 using api::audio::AudioDeviceInfo;
 
+uint64_t GetStableDeviceId(const chromeos::AudioDevice& device) {
+  // TODO(tbarzic): Update audio API to expose new stable device ID version.

[jennyz, 2016/12/09 23:52:19]

Can you file a separate bug for this work item and add the bug number here?

[tbarzic, 2016/12/10 02:35:08]

Done.

+  // For now, for the sake of backward compatibility, use deprecated version.
+  if (device.stable_device_id_version == 1)
+    return device.stable_device_id;
+  if (device.stable_device_id_version == 2)
+    return device.deprecated_stable_device_id;
+  NOTREACHED() << "Unsupported stable audio devide id version.";
+  return 0;
+}
+
 class AudioServiceImpl : public AudioService,
                          public chromeos::CrasAudioHandler::AudioObserver {
  public:
@@ -269,7 +280,7 @@ void AudioServiceImpl::NotifyDevicesChanged() {
                   devices[i].id)
             : cras_audio_handler_->GetInputGainPercentForDevice(devices[i].id);
     info.stable_device_id.reset(
-        new std::string(base::Uint64ToString(devices[i].stable_device_id)));
+        new std::string(base::Uint64ToString(GetStableDeviceId(devices[i]))));
 
     devices_info_list.push_back(std::move(info));
   }