Pass more detailed audio hardware configuration information to the renderer

content/common/media/media_param_traits.h

Index: content/common/media/media_param_traits.h
===================================================================
--- content/common/media/media_param_traits.h	(revision 185058)
+++ content/common/media/media_param_traits.h	(working copy)
@@ -9,6 +9,7 @@
 #include "ipc/ipc_param_traits.h"
 
 namespace media {
+class AudioHardwareConfig;
 class AudioParameters;
 struct VideoCaptureParams;
 }
@@ -16,6 +17,14 @@
 namespace IPC {
 
 template <>
+struct ParamTraits<media::AudioHardwareConfig> {
+  typedef media::AudioHardwareConfig param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, PickleIterator* iter, param_type* r);
+  static void Log(const param_type& p, std::string* l);
+};
+
+template <>
 struct ParamTraits<media::AudioParameters> {
   typedef media::AudioParameters param_type;
   static void Write(Message* m, const param_type& p);