media: Introduce Renderer interface and RendererImpl.

media/base/filter_collection.cc

Index: media/base/filter_collection.cc
diff --git a/media/base/filter_collection.cc b/media/base/filter_collection.cc
index da5042f327ffbcae9af1c0cf61bc0312f8d082a3..976611097bd5da95dcac8b0b3f2b1ac89d586d13 100644
--- a/media/base/filter_collection.cc
+++ b/media/base/filter_collection.cc
@@ -4,10 +4,9 @@
 
 #include "media/base/filter_collection.h"
 
-#include "media/base/audio_renderer.h"
 #include "media/base/demuxer.h"
+#include "media/base/renderer.h"
 #include "media/base/text_renderer.h"
-#include "media/base/video_renderer.h"
 
 namespace media {
 
@@ -23,22 +22,13 @@ Demuxer* FilterCollection::GetDemuxer() {
   return demuxer_;
 }
 
-void FilterCollection::SetAudioRenderer(
-    scoped_ptr<AudioRenderer> audio_renderer) {
-  audio_renderer_ = audio_renderer.Pass();
+void FilterCollection::SetRenderer(

[scherkus (not reviewing), 2014/08/21 21:16:59]

nit: reformat

[xhwang, 2014/08/22 19:11:30]

Done.

+    scoped_ptr<Renderer> renderer) {
+  renderer_ = renderer.Pass();
 }
 
-scoped_ptr<AudioRenderer> FilterCollection::GetAudioRenderer() {
-  return audio_renderer_.Pass();
-}
-
-void FilterCollection::SetVideoRenderer(
-    scoped_ptr<VideoRenderer> video_renderer) {
-  video_renderer_ = video_renderer.Pass();
-}
-
-scoped_ptr<VideoRenderer> FilterCollection::GetVideoRenderer() {
-  return video_renderer_.Pass();
+scoped_ptr<Renderer> FilterCollection::GetRenderer() {
+  return renderer_.Pass();
 }
 
 void FilterCollection::SetTextRenderer(