Remove AudioDecoder from the Filter heirarchy.

media/base/pipeline_status.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_BASE_PIPELINE_STATUS_H_
 #define MEDIA_BASE_PIPELINE_STATUS_H_
 
 #include "base/callback.h"
 
 namespace media {
@@ skipping 19 matching lines @@
   DEMUXER_ERROR_NO_SUPPORTED_STREAMS,
   DEMUXER_ERROR_COULD_NOT_CREATE_THREAD,
   // Decoder related errors.
   DECODER_ERROR_NOT_SUPPORTED,
   // DataSourceFactory errors.
   DATASOURCE_ERROR_URL_NOT_SUPPORTED,
 };
 
 typedef base::Callback<void(PipelineStatus)> PipelineStatusCB;
 
+// TODO(scherkus): this should be moved alongside host interface definitions.
+struct PipelineStatistics {
+  PipelineStatistics()
+      : audio_bytes_decoded(0),
+        video_bytes_decoded(0),
+        video_frames_decoded(0),
+        video_frames_dropped(0) {
+  }
+
+  uint32 audio_bytes_decoded;  // Should be uint64?
+  uint32 video_bytes_decoded;  // Should be uint64?
+  uint32 video_frames_decoded;
+  uint32 video_frames_dropped;
+};
+
+// Used for updating pipeline statistics.
+typedef base::Callback<void(const PipelineStatistics&)> StatisticsCallback;
+
 }  // namespace media
 
 #endif  // MEDIA_BASE_PIPELINE_STATUS_H_