Reporting a more accurate buffered time for the video tag

media/base/filter_host.h

Index: media/base/filter_host.h
diff --git a/media/base/filter_host.h b/media/base/filter_host.h
index e90096f98a386c04baf0f52ee798e95147cb6bce..e28a957082a099a51047b929a25dc449f3449ed3 100644
--- a/media/base/filter_host.h
+++ b/media/base/filter_host.h
@@ -74,6 +74,12 @@ class FilterHost {
   // filters.
   virtual void DisableAudioRenderer() = 0;
 
+  // Sets the byte offset at which the client is requesting the video.
+  virtual void SetCurrentReadPosition(int64 offset) = 0;
+
+  // Gets the byte offset at which the client is requesting the video.
+  virtual int64 GetCurrentReadPosition() = 0;
+
  protected:
   virtual ~FilterHost() {}
 };