Move VideoRenderer out of Filter heirarchy.

media/base/audio_renderer.cc

Index: media/base/audio_renderer.cc
diff --git a/media/base/filters.cc b/media/base/audio_renderer.cc
similarity index 66%
rename from media/base/filters.cc
rename to media/base/audio_renderer.cc
index 17be8a573f1d4ff6cf7daf037479f466e136b09c..e7b737ece5e1cbbd1f44cd3ebc1b15209ee9169a 100644
--- a/media/base/filters.cc
+++ b/media/base/audio_renderer.cc
@@ -2,12 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "media/base/filters.h"
+#include "media/base/audio_renderer.h"
 
 namespace media {
 
-Filter::Filter() {}
-
-Filter::~Filter() {}
+AudioRenderer::AudioRenderer() {}
+AudioRenderer::~AudioRenderer() {}
 
 }  // namespace media