Revert r180578, r180591, and r180604 from 1410 branch.

media/base/filter_collection.cc

Index: media/base/filter_collection.cc
===================================================================
--- media/base/filter_collection.cc	(revision 182591)
+++ media/base/filter_collection.cc	(working copy)
@@ -25,29 +25,37 @@
   return demuxer_;
 }
 
-void FilterCollection::SetAudioRenderer(
-    scoped_ptr<AudioRenderer> audio_renderer) {
-  audio_renderer_ = audio_renderer.Pass();
+void FilterCollection::AddAudioRenderer(AudioRenderer* audio_renderer) {
+  audio_renderers_.push_back(audio_renderer);
 }
 
-scoped_ptr<AudioRenderer> FilterCollection::GetAudioRenderer() {
-  return audio_renderer_.Pass();
+void FilterCollection::AddVideoRenderer(VideoRenderer* video_renderer) {
+  video_renderers_.push_back(video_renderer);
 }
 
-void FilterCollection::SetVideoRenderer(
-    scoped_ptr<VideoRenderer> video_renderer) {
-  video_renderer_ = video_renderer.Pass();
+void FilterCollection::Clear() {
+  audio_decoders_.clear();
+  video_decoders_.clear();
+  audio_renderers_.clear();
+  video_renderers_.clear();
 }
 
-scoped_ptr<VideoRenderer> FilterCollection::GetVideoRenderer() {
-  return video_renderer_.Pass();
+void FilterCollection::SelectAudioRenderer(scoped_refptr<AudioRenderer>* out) {
+  if (audio_renderers_.empty()) {
+    *out = NULL;
+    return;
+  }
+  *out = audio_renderers_.front();
+  audio_renderers_.pop_front();
 }
 
-void FilterCollection::Clear() {
-  audio_decoders_.clear();
-  video_decoders_.clear();
-  audio_renderer_.reset();
-  video_renderer_.reset();
+void FilterCollection::SelectVideoRenderer(scoped_refptr<VideoRenderer>* out) {
+  if (video_renderers_.empty()) {
+    *out = NULL;
+    return;
+  }
+  *out = video_renderers_.front();
+  video_renderers_.pop_front();
 }
 
 FilterCollection::AudioDecoderList* FilterCollection::GetAudioDecoders() {