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 187648)
+++ content/common/media/media_param_traits.h	(working copy)
@@ -5,6 +5,7 @@
 #ifndef CONTENT_COMMON_MEDIA_MEDIA_PARAM_TRAITS_H_
 #define CONTENT_COMMON_MEDIA_MEDIA_PARAM_TRAITS_H_
 
+#include "content/common/content_export.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_param_traits.h"
 
@@ -16,7 +17,7 @@
 namespace IPC {
 
 template <>
-struct ParamTraits<media::AudioParameters> {
+struct CONTENT_EXPORT ParamTraits<media::AudioParameters> {
   typedef media::AudioParameters param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, PickleIterator* iter, param_type* r);
@@ -24,7 +25,7 @@
 };
 
 template <>
-struct ParamTraits<media::VideoCaptureParams> {
+struct CONTENT_EXPORT ParamTraits<media::VideoCaptureParams> {
   typedef media::VideoCaptureParams param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, PickleIterator* iter, param_type* r);