Update audio api to use v2 stable device ID

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 181900aab57dd8c48f4f3a61802b3be7fd1239aa..8366f7b9c29ab746aaf005a43352e35f769b53b8 100644
--- a/extensions/browser/api/audio/audio_service_chromeos.cc
+++ b/extensions/browser/api/audio/audio_service_chromeos.cc
@@ -23,10 +23,7 @@ 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.
-  // For now, for the sake of backward compatibility, use deprecated version.
-  // http://crbug.com/673392
+uint64_t GetV1StableDeviceId(const chromeos::AudioDevice& device) {
   if (device.stable_device_id_version == 1)
     return device.stable_device_id;
   if (device.stable_device_id_version == 2)
@@ -280,8 +277,11 @@ void AudioServiceImpl::NotifyDevicesChanged() {
             ? cras_audio_handler_->GetOutputVolumePercentForDevice(
                   devices[i].id)
             : cras_audio_handler_->GetInputGainPercentForDevice(devices[i].id);
+    info.stable_id = devices[i].stable_device_id_version == 2
+                         ? base::Uint64ToString(devices[i].stable_device_id)
+                         : "";
     info.stable_device_id.reset(
-        new std::string(base::Uint64ToString(GetStableDeviceId(devices[i]))));
+        new std::string(base::Uint64ToString(GetV1StableDeviceId(devices[i]))));
 
     devices_info_list.push_back(std::move(info));
   }