Move VoiceEngineObserver into AudioSendStream so that we detect typing noises and return properly i…

webrtc/video/video_send_stream.cc

Index: webrtc/video/video_send_stream.cc
diff --git a/webrtc/video/video_send_stream.cc b/webrtc/video/video_send_stream.cc
index 4ec923f7888403c938124dbdf7a0f9e6bbbcc45c..4bdf29a72d2ed8ac51fe13c812b7d486aa4ba08c 100644
--- a/webrtc/video/video_send_stream.cc
+++ b/webrtc/video/video_send_stream.cc
@@ -98,7 +98,7 @@ std::string VideoSendStream::Config::ToString() const {
   ss << ", post_encode_callback: " << (post_encode_callback != nullptr
                                            ? "(EncodedFrameObserver)"
                                            : "nullptr");
-  ss << "local_renderer: " << (local_renderer != nullptr ? "(VideoRenderer)"
+  ss << ", local_renderer: " << (local_renderer != nullptr ? "(VideoRenderer)"
                                                          : "nullptr");
   ss << ", render_delay_ms: " << render_delay_ms;
   ss << ", target_delay_ms: " << target_delay_ms;