UMA stats for browser/renderer audio rendering buffer size mismatch.

media/base/ipc/media_param_traits.cc

Index: media/base/ipc/media_param_traits.cc
diff --git a/media/base/ipc/media_param_traits.cc b/media/base/ipc/media_param_traits.cc
index e91012fecce74ac928dd62814f84b41de75d1dcc..3e23a53e7c409089eac7c667fd0c6ddbd25aca9a 100644
--- a/media/base/ipc/media_param_traits.cc
+++ b/media/base/ipc/media_param_traits.cc
@@ -15,6 +15,7 @@
 #include "ui/gfx/ipc/skia/gfx_skia_param_traits.h"
 
 using media::AudioParameters;
+using media::AudioLatency;
 using media::ChannelLayout;
 using media::VideoCaptureFormat;
 
@@ -30,6 +31,7 @@ void ParamTraits<AudioParameters>::GetSize(base::PickleSizer* s,
   GetParamSize(s, p.channels());
   GetParamSize(s, p.effects());
   GetParamSize(s, p.mic_positions());
+  GetParamSize(s, p.latency_tag());
 }
 
 void ParamTraits<AudioParameters>::Write(base::Pickle* m,
@@ -42,6 +44,7 @@ void ParamTraits<AudioParameters>::Write(base::Pickle* m,
   WriteParam(m, p.channels());
   WriteParam(m, p.effects());
   WriteParam(m, p.mic_positions());
+  WriteParam(m, p.latency_tag());
 }
 
 bool ParamTraits<AudioParameters>::Read(const base::Pickle* m,
@@ -51,13 +54,15 @@ bool ParamTraits<AudioParameters>::Read(const base::Pickle* m,
   ChannelLayout channel_layout;
   int sample_rate, bits_per_sample, frames_per_buffer, channels, effects;
   std::vector<media::Point> mic_positions;
+  AudioLatency::LatencyType latency_tag;
 
   if (!ReadParam(m, iter, &format) || !ReadParam(m, iter, &channel_layout) ||
       !ReadParam(m, iter, &sample_rate) ||
       !ReadParam(m, iter, &bits_per_sample) ||
       !ReadParam(m, iter, &frames_per_buffer) ||
       !ReadParam(m, iter, &channels) || !ReadParam(m, iter, &effects) ||
-      !ReadParam(m, iter, &mic_positions)) {
+      !ReadParam(m, iter, &mic_positions) ||
+      !ReadParam(m, iter, &latency_tag)) {
     return false;
   }
 
@@ -66,6 +71,7 @@ bool ParamTraits<AudioParameters>::Read(const base::Pickle* m,
   params.set_channels_for_discrete(channels);
   params.set_effects(effects);
   params.set_mic_positions(mic_positions);
+  params.set_latency_tag(latency_tag);
 
   *r = params;
   return r->IsValid();