WIP: Move the creation of AudioCodecFactory into PeerConnectionFactory.

webrtc/media/engine/webrtcvoiceengine.h

Index: webrtc/media/engine/webrtcvoiceengine.h
diff --git a/webrtc/media/engine/webrtcvoiceengine.h b/webrtc/media/engine/webrtcvoiceengine.h
index 1cc550430435b4dedadd20144c0ce0c109119be0..8a1a034538b08fba566ec29fe4dc1ffdaa005562 100644
--- a/webrtc/media/engine/webrtcvoiceengine.h
+++ b/webrtc/media/engine/webrtcvoiceengine.h
@@ -46,9 +46,14 @@ class WebRtcVoiceEngine final : public webrtc::TraceCallback  {
   // Exposed for the WVoE/MC unit test.
   static bool ToCodecInst(const AudioCodec& in, webrtc::CodecInst* out);
 
-  explicit WebRtcVoiceEngine(webrtc::AudioDeviceModule* adm);
+  explicit WebRtcVoiceEngine(
+      webrtc::AudioDeviceModule* adm,
+      std::shared_ptr<webrtc::AudioDecoderFactory> decoder_factory);
   // Dependency injection for testing.
-  WebRtcVoiceEngine(webrtc::AudioDeviceModule* adm, VoEWrapper* voe_wrapper);
+  WebRtcVoiceEngine(
+      webrtc::AudioDeviceModule* adm,
+      std::shared_ptr<webrtc::AudioDecoderFactory> decoder_factory,
+      VoEWrapper* voe_wrapper);
   ~WebRtcVoiceEngine() override;
 
   rtc::scoped_refptr<webrtc::AudioState> GetAudioState() const;
@@ -111,6 +116,7 @@ class WebRtcVoiceEngine final : public webrtc::TraceCallback  {
 
   // The audio device manager.
   rtc::scoped_refptr<webrtc::AudioDeviceModule> adm_;
+  std::shared_ptr<webrtc::AudioDecoderFactory> decoder_factory_;
   // The primary instance of WebRtc VoiceEngine.
   std::unique_ptr<VoEWrapper> voe_wrapper_;
   rtc::scoped_refptr<webrtc::AudioState> audio_state_;