Register APM even though echo cancellation is disabled.

content/renderer/media/media_stream_audio_processor.cc

Index: content/renderer/media/media_stream_audio_processor.cc
diff --git a/content/renderer/media/media_stream_audio_processor.cc b/content/renderer/media/media_stream_audio_processor.cc
index 6f7afe612a4a9d74c9cf555243ed1840be176828..b78d7d57a0dbf1eddb73a1f0ce4c994c15303be0 100644
--- a/content/renderer/media/media_stream_audio_processor.cc
+++ b/content/renderer/media/media_stream_audio_processor.cc
@@ -667,12 +667,13 @@ void MediaStreamAudioProcessor::InitializeAudioProcessingModule(
   // Enable the audio processing components.
   webrtc::AudioProcessing::Config apm_config;
 
+  if (playout_data_source_) {
+    playout_data_source_->AddPlayoutSink(this);
+  }
+
   if (echo_cancellation) {
     EnableEchoCancellation(audio_processing_.get());
 
-    if (playout_data_source_)
-      playout_data_source_->AddPlayoutSink(this);
-
     // Prepare for logging echo information. If there are data remaining in
     // |echo_information_| we simply discard it.
     echo_information_.reset(new EchoInformation());