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

services/media/framework/parts/file_reader.h

Index: services/media/framework/parts/file_reader.h
diff --git a/services/media/framework/parts/file_reader.h b/services/media/framework/parts/file_reader.h
index ba7c5882bd43eaee15baeb3d8caaf79b5f099d2d..54492863177e8a15c1c790ec80bf41515f91d4d3 100644
--- a/services/media/framework/parts/file_reader.h
+++ b/services/media/framework/parts/file_reader.h
@@ -13,8 +13,8 @@ namespace media {
 // Reads raw data from a file.
 class FileReader : public Reader {
  public:
-  static ReaderPtr Create() {
-    return ReaderPtr(new FileReader());
+  static std::shared_ptr<Reader> Create() {
+    return std::shared_ptr<Reader>(new FileReader());
   }
 
   ~FileReader() override;