Motown: Framework parts for mojo transport (producer/consumer/mediapipe) and control (audiotrack).

services/media/framework/graph.h

Index: services/media/framework/graph.h
diff --git a/services/media/framework/graph.h b/services/media/framework/graph.h
index de4e85e087a78b09afb037a854c77ad76240e6be..e17f52f12b328b08381344b0eb762b9daf3b52b8 100644
--- a/services/media/framework/graph.h
+++ b/services/media/framework/graph.h
@@ -187,6 +187,12 @@ class Graph {
   // Primes all the sinks in the graph.
   void PrimeSinks();
 
+  // Flushes the output and the subgraph downstream of it.
+  void FlushOutput(const OutputRef& output);
+
+  // Flushes the output and the subgraph downstream of it.
+  void FlushAllOutputs(PartRef part);
+
  private:
   // Adds a stage to the graph.
   PartRef Add(Stage* stage);