Implemented end-of-stream callback for media::PipelineImpl.

media/base/filters.h

Index: media/base/filters.h
diff --git a/media/base/filters.h b/media/base/filters.h
index 9a6376368254a695ac3bfa5b82b20c40e57f1022..875c8c676d0a7ef75bd06a15783c2c847f7320ad 100644
--- a/media/base/filters.h
+++ b/media/base/filters.h
@@ -314,6 +314,10 @@ class VideoRenderer : public MediaFilter {
   // Initialize a VideoRenderer with the given VideoDecoder, executing the
   // callback upon completion.
   virtual void Initialize(VideoDecoder* decoder, FilterCallback* callback) = 0;
+
+  // Returns true if this filter has received and processed an end-of-stream
+  // buffer.
+  virtual bool HasEnded() = 0;
 };
 
 
@@ -331,6 +335,10 @@ class AudioRenderer : public MediaFilter {
   // callback upon completion.
   virtual void Initialize(AudioDecoder* decoder, FilterCallback* callback) = 0;
 
+  // Returns true if this filter has received and processed an end-of-stream
+  // buffer.
+  virtual bool HasEnded() = 0;
+
   // Sets the output volume.
   virtual void SetVolume(float volume) = 0;
 };