[Chromecast] Process streams with different post-processing.

chromecast/media/cma/backend/alsa/media_pipeline_backend_alsa.h

Index: chromecast/media/cma/backend/alsa/media_pipeline_backend_alsa.h
diff --git a/chromecast/media/cma/backend/alsa/media_pipeline_backend_alsa.h b/chromecast/media/cma/backend/alsa/media_pipeline_backend_alsa.h
index de0baadef2220d836a9823a6262261d9f5756aa1..ba096ec78807fa1d476e70919e366e16fadea621 100644
--- a/chromecast/media/cma/backend/alsa/media_pipeline_backend_alsa.h
+++ b/chromecast/media/cma/backend/alsa/media_pipeline_backend_alsa.h
@@ -6,6 +6,7 @@
 #define CHROMECAST_MEDIA_CMA_BACKEND_ALSA_MEDIA_PIPELINE_BACKEND_ALSA_H_
 
 #include <memory>
+#include <string>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ -41,6 +42,7 @@ class MediaPipelineBackendAlsa : public MediaPipelineBackend {
   int64_t GetCurrentPts() override;
 
   bool Primary() const;
+  std::string Name() const;
   const scoped_refptr<base::SingleThreadTaskRunner>& GetTaskRunner() const;
 
  private: