DemuxerFactory is born!

media/base/filter_factories.h

Index: media/base/filter_factories.h
diff --git a/media/base/filter_factories.h b/media/base/filter_factories.h
index 7bc0c44bba910c66ab0802eeb9f4e77109a9fe9c..fd40742c5d5c343bd5b7229b3ef0b19bf218e77b 100644
--- a/media/base/filter_factories.h
+++ b/media/base/filter_factories.h
@@ -28,6 +28,24 @@ class DataSourceFactory {
   virtual DataSourceFactory* Clone() const = 0;
 };
 
+class Demuxer;
+
+// Asynchronous factory interface for building Demuxer objects.
+class DemuxerFactory {
+ public:
+  // Ownership of the Demuxer is transferred through this callback.
+  typedef Callback2<PipelineError, Demuxer*>::Type BuildCallback;
+
+  virtual ~DemuxerFactory();
+
+  // Builds a Demuxer for |url| and returns it via |callback|.
+  virtual void Build(const std::string& url, BuildCallback* callback) = 0;
+
+  // Makes a copy of this factory.
+  // NOTE: Pending requests are not cloned.
+  virtual DemuxerFactory* Clone() const = 0;
+};
+
 }  // namespace media
 
 #endif  // MEDIA_BASE_FILTER_FACTORIES_H_