Remove Pipeline::has_{audio,video}_ members.

media/base/pipeline.h

Index: media/base/pipeline.h
diff --git a/media/base/pipeline.h b/media/base/pipeline.h
index 9325f1ab5c199a7ac6985c87d28cc205a64b5729..22846b937dbdfff0dfc7e405e07668110d3253cc 100644
--- a/media/base/pipeline.h
+++ b/media/base/pipeline.h
@@ -214,6 +214,7 @@ class MEDIA_EXPORT Pipeline
   void SetErrorForTesting(PipelineStatus status);
 
  private:
+  friend class PipelineTest;
   FRIEND_TEST_ALL_PREFIXES(PipelineTest, GetBufferedTimeRanges);
   FRIEND_TEST_ALL_PREFIXES(PipelineTest, DisableAudioRenderer);
   FRIEND_TEST_ALL_PREFIXES(PipelineTest, DisableAudioRendererDuringInit);
@@ -478,13 +479,6 @@ class MEDIA_EXPORT Pipeline
   // reset the pipeline state, and restore this to PIPELINE_OK.
   PipelineStatus status_;
 
-  // Whether the media contains rendered audio and video streams.
-  // TODO(fischman,scherkus): replace these with checks for
-  // {audio,video}_decoder_ once extraction of {Audio,Video}Decoder from the
-  // Filter heirarchy is done.
-  bool has_audio_;
-  bool has_video_;
-
   // The following data members are only accessed by tasks posted to
   // |message_loop_|.