Improving WebM video duration estimation.

media/base/stream_parser_buffer.h

Index: media/base/stream_parser_buffer.h
diff --git a/media/base/stream_parser_buffer.h b/media/base/stream_parser_buffer.h
index f894381e34691e159ca6f8ef1dd399d82b42a883..c614828537a56ad134278388e1491db46da2bfa2 100644
--- a/media/base/stream_parser_buffer.h
+++ b/media/base/stream_parser_buffer.h
@@ -170,6 +170,12 @@ class MEDIA_EXPORT StreamParserBuffer : public DecoderBuffer {
 
   void set_timestamp(base::TimeDelta timestamp) override;
 
+  bool is_duration_estimated() const { return is_duration_estimated_; }
+
+  void set_is_duration_estimated(bool is_estimated) {
+    is_duration_estimated_ = is_estimated;
+  }
+
  private:
   StreamParserBuffer(const uint8* data, int data_size,
                      const uint8* side_data, int side_data_size,
@@ -183,6 +189,7 @@ class MEDIA_EXPORT StreamParserBuffer : public DecoderBuffer {
   TrackId track_id_;
   BufferQueue splice_buffers_;
   scoped_refptr<StreamParserBuffer> preroll_buffer_;
+  bool is_duration_estimated_;
 
   DISALLOW_COPY_AND_ASSIGN(StreamParserBuffer);
 };