Motown: Change media type (stream type) representation

services/media/audio/platform/generic/mixer.cc

Index: services/media/audio/platform/generic/mixer.cc
diff --git a/services/media/audio/platform/generic/mixer.cc b/services/media/audio/platform/generic/mixer.cc
index 622e2ee9aafebe58d5c71c385e7c26f8772c435f..7d21da74ace59cdfdb18235d1e2123b3acc5bef9 100644
--- a/services/media/audio/platform/generic/mixer.cc
+++ b/services/media/audio/platform/generic/mixer.cc
@@ -24,8 +24,8 @@ Mixer::Mixer(uint32_t pos_filter_width,
     neg_filter_width_(neg_filter_width) {
 }
 
-MixerPtr Mixer::Select(const LpcmMediaTypeDetailsPtr& src_format,
-                       const LpcmMediaTypeDetailsPtr* optional_dst_format) {
+MixerPtr Mixer::Select(const AudioMediaTypeDetailsPtr& src_format,
+                       const AudioMediaTypeDetailsPtr* optional_dst_format) {
   // We should always have a source format.
   DCHECK(src_format);
 
@@ -33,7 +33,7 @@ MixerPtr Mixer::Select(const LpcmMediaTypeDetailsPtr& src_format,
   // probably the ThrottleOutput we are picking a mixer for.
   if (!optional_dst_format) { return MixerPtr(new mixers::NoOp()); }
 
-  const LpcmMediaTypeDetailsPtr& dst_format = *optional_dst_format;
+  const AudioMediaTypeDetailsPtr& dst_format = *optional_dst_format;
   DCHECK(dst_format);
 
   // If the source sample rate is an integer multiple of the destination sample