Enable the injection of an APM into a peerconnection

webrtc/api/peerconnectioninterface.h

Index: webrtc/api/peerconnectioninterface.h
diff --git a/webrtc/api/peerconnectioninterface.h b/webrtc/api/peerconnectioninterface.h
index 1b74564d6e88d49548c502bdec84bd282611b9ea..609fd4aa932dd64429d7a8808b4678f386755416 100644
--- a/webrtc/api/peerconnectioninterface.h
+++ b/webrtc/api/peerconnectioninterface.h
@@ -1080,6 +1080,24 @@ rtc::scoped_refptr<PeerConnectionFactoryInterface> CreatePeerConnectionFactory(
     cricket::WebRtcVideoEncoderFactory* encoder_factory,
     cricket::WebRtcVideoDecoderFactory* decoder_factory);
 
+// Create a new instance of PeerConnectionFactoryInterface with optional
+// external audio mixed and audio processing modules.
+//
+// If |audio_mixer| is null, an internal audio mixer will be created and used.
+// If |audio_processing| is null, an internal audio processing module will be
+// created and used.
+rtc::scoped_refptr<PeerConnectionFactoryInterface> CreatePeerConnectionFactory(

[peah-webrtc, 2017/06/30 11:48:46]

This name was chosen in discussion with kwiberg@ as adding further suffixes
describing what modules were injected did not scale.

[Taylor Brandstetter, 2017/06/30 14:18:39]

Agreed. We touched on this is a "slim/modular webrtc" discussion yesterday, and
decided it's ok to keep adding more overloads, because eventually all the
modules should be represented here and the list will stop growing. And further
modularity will be provided by breaking individual modules apart (changing the
API for that module, but not necessarily for CreatePeerConnectionFactory).

+    rtc::Thread* network_thread,
+    rtc::Thread* worker_thread,
+    rtc::Thread* signaling_thread,
+    AudioDeviceModule* default_adm,
+    rtc::scoped_refptr<AudioEncoderFactory> audio_encoder_factory,
+    rtc::scoped_refptr<AudioDecoderFactory> audio_decoder_factory,
+    cricket::WebRtcVideoEncoderFactory* video_encoder_factory,
+    cricket::WebRtcVideoDecoderFactory* video_decoder_factory,
+    rtc::scoped_refptr<AudioMixer> audio_mixer,
+    rtc::scoped_refptr<AudioProcessing> audio_processing);
+
 // Create a new instance of PeerConnectionFactoryInterface with external audio
 // mixer.
 //