Motown: Remove LPCM optimizations, fix prepare, add flush, add ActiveMultistreamSink model/stage

services/media/framework_create/decoder.cc

Index: services/media/framework_create/decoder.cc
diff --git a/services/media/framework_create/decoder.cc b/services/media/framework_create/decoder.cc
index ec37d59e323261e6b684c144101f1b23347b0abc..c88dc58085b66549c20c136b9e88c93cc5407587 100644
--- a/services/media/framework_create/decoder.cc
+++ b/services/media/framework_create/decoder.cc
@@ -8,8 +8,8 @@ namespace mojo {
 namespace media {
 
 Result Decoder::Create(
-    const StreamTypePtr& stream_type,
-    DecoderPtr* decoder_out) {
+    const std::unique_ptr<StreamType>& stream_type,
+    std::shared_ptr<Decoder>* decoder_out) {
   return Result::kUnsupportedOperation;
 }