Make ~webrtc::AudioSendStream public, and s/config()/GetConfig(), as well as make public.

webrtc/call/audio_send_stream.h

Index: webrtc/call/audio_send_stream.h
diff --git a/webrtc/call/audio_send_stream.h b/webrtc/call/audio_send_stream.h
index 26729e426cb835613ad61d610a19a9b0bb26f5d0..fa5b5eecc8d20c5fa57116b7b1aba8c5bc7bd887 100644
--- a/webrtc/call/audio_send_stream.h
+++ b/webrtc/call/audio_send_stream.h
@@ -129,6 +129,10 @@ class AudioSendStream {
     rtc::scoped_refptr<AudioEncoderFactory> encoder_factory;
   };
 
+  virtual ~AudioSendStream() = default;
+
+  virtual const webrtc::AudioSendStream::Config& GetConfig() const = 0;
+
   // Reconfigure the stream according to the Configuration.
   virtual void Reconfigure(const Config& config) = 0;
 
@@ -146,9 +150,6 @@ class AudioSendStream {
   virtual void SetMuted(bool muted) = 0;
 
   virtual Stats GetStats() const = 0;
-
- protected:
-  virtual ~AudioSendStream() {}
 };
 }  // namespace webrtc