Motown: Rename MediaProducer/Consumer to MediaPacketProducer/Consumer

examples/audio_play_test/play_tone.cc

Index: examples/audio_play_test/play_tone.cc
diff --git a/examples/audio_play_test/play_tone.cc b/examples/audio_play_test/play_tone.cc
index 6db542e754aaf7a83baf41633be9a39311a324c8..9b4f1c53192e066ea326ce75f06765ba04e13d3e 100644
--- a/examples/audio_play_test/play_tone.cc
+++ b/examples/audio_play_test/play_tone.cc
@@ -141,8 +141,8 @@ void PlayToneApp::OnInitialize() {
   media_type->encoding = MediaType::kAudioEncodingLpcm;
 
   media_renderer_->SetMediaType(media_type.Pass());
-  MediaConsumerPtr pipe;
-  media_renderer_->GetConsumer(GetProxy(&pipe));
+  MediaPacketConsumerPtr pipe;
+  media_renderer_->GetPacketConsumer(GetProxy(&pipe));
 
   // Now that the configuration request is in-flight and we our media pipe
   // proxy, pass its interface to our circular buffer helper, set up our