[Chromecast] Make ALSA rendering delay either accurate or kNoTimestamp

chromecast/media/cma/backend/alsa/alsa_wrapper.cc

Index: chromecast/media/cma/backend/alsa/alsa_wrapper.cc
diff --git a/chromecast/media/cma/backend/alsa/alsa_wrapper.cc b/chromecast/media/cma/backend/alsa/alsa_wrapper.cc
index 5898b286dcc76c888c7a56e64185f6117f465875..6e87540c12004034d28ca5bc426e20380f0f804b 100644
--- a/chromecast/media/cma/backend/alsa/alsa_wrapper.cc
+++ b/chromecast/media/cma/backend/alsa/alsa_wrapper.cc
@@ -51,6 +51,10 @@ void AlsaWrapper::PcmStatusGetHtstamp(const snd_pcm_status_t* obj,
   snd_pcm_status_get_htstamp(obj, ptr);
 }
 
+snd_pcm_state_t AlsaWrapper::PcmStatusGetState(const snd_pcm_status_t* obj) {
+  return snd_pcm_status_get_state(obj);
+}
+
 int AlsaWrapper::PcmHwParamsMalloc(snd_pcm_hw_params_t** ptr) {
   return snd_pcm_hw_params_malloc(ptr);
 }