Injectable audio encoders: Moved audio encoder, factory and builtin factory to api/.

webrtc/api/peerconnectioninterface.h

Index: webrtc/api/peerconnectioninterface.h
diff --git a/webrtc/api/peerconnectioninterface.h b/webrtc/api/peerconnectioninterface.h
index 401ef0480b07d22e1658b932bec8a3a2eec60d59..a3a07b6313cc55eab982b538304f51d8568b62eb 100644
--- a/webrtc/api/peerconnectioninterface.h
+++ b/webrtc/api/peerconnectioninterface.h
@@ -73,6 +73,9 @@
 #include <vector>
 
 #include "webrtc/api/audio_codecs/audio_decoder_factory.h"
+#include "webrtc/api/audio_codecs/audio_encoder_factory.h"
+// TODO(ossu): Remove this once downstream projects have been updated.
+#include "webrtc/api/audio_codecs/builtin_audio_encoder_factory.h"
 #include "webrtc/api/datachannelinterface.h"
 #include "webrtc/api/dtmfsenderinterface.h"
 #include "webrtc/api/jsep.h"
@@ -91,9 +94,6 @@
 #include "webrtc/base/sslstreamadapter.h"
 #include "webrtc/media/base/mediachannel.h"
 #include "webrtc/media/base/videocapturer.h"
-#include "webrtc/modules/audio_coding/codecs/audio_encoder_factory.h"
-// TODO(ossu): Remove this once downstream projects have been updated.
-#include "webrtc/modules/audio_coding/codecs/builtin_audio_encoder_factory.h"
 #include "webrtc/p2p/base/portallocator.h"
 
 namespace rtc {