Add live mode detection in WebM MediaSource parser.

media/base/demuxer.h

Index: media/base/demuxer.h
diff --git a/media/base/demuxer.h b/media/base/demuxer.h
index 581bc0075f6f5023da5970308a6b99614a718861..373faec23f4bbfaf8dbe840ba778c22b33567f8d 100644
--- a/media/base/demuxer.h
+++ b/media/base/demuxer.h
@@ -44,6 +44,12 @@ class MEDIA_EXPORT DemuxerHost {
 
 class MEDIA_EXPORT Demuxer {
  public:
+  enum Liveness {
+    LIVENESS_UNKNOWN,
+    LIVENESS_RECORDED,
+    LIVENESS_LIVE,
+  };
+
   // A new potentially encrypted stream has been parsed.
   // First parameter - The type of initialization data.
   // Second parameter - The initialization data associated with the stream.
@@ -92,6 +98,9 @@ class MEDIA_EXPORT Demuxer {
   // a null Time is returned.
   virtual base::Time GetTimelineOffset() const = 0;
 
+  // Returns liveness of the stream, i.e. whether it recorded or live.

[acolwell GONE FROM CHROMIUM, 2014/04/25 23:30:52]

nit: s/it/it is/

[Sergey Ulanov, 2014/04/26 01:51:03]

Done.

+  virtual Liveness GetLiveness() const = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(Demuxer);
 };