Revert 66125 -- Broke Windows build - Move FilterType into MediaFilterCollect...

media/base/mock_filters.h

Index: media/base/mock_filters.h
===================================================================
--- media/base/mock_filters.h	(revision 66137)
+++ media/base/mock_filters.h	(working copy)
@@ -293,13 +293,13 @@
     MediaFilterCollection* collection = new MediaFilterCollection();
 
     if (include_data_source) {
-      collection->AddDataSource(data_source_);
+      collection->AddFilter(data_source_);
     }
-    collection->AddDemuxer(demuxer_);
-    collection->AddVideoDecoder(video_decoder_);
-    collection->AddAudioDecoder(audio_decoder_);
-    collection->AddVideoRenderer(video_renderer_);
-    collection->AddAudioRenderer(audio_renderer_);
+    collection->AddFilter(demuxer_);
+    collection->AddFilter(video_decoder_);
+    collection->AddFilter(audio_decoder_);
+    collection->AddFilter(video_renderer_);
+    collection->AddFilter(audio_renderer_);
     return collection;
   }