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

webrtc/voice_engine/BUILD.gn

Index: webrtc/voice_engine/BUILD.gn
diff --git a/webrtc/voice_engine/BUILD.gn b/webrtc/voice_engine/BUILD.gn
index 7a4641f8492e218cdd067e61e7364b21f1d82dc2..bd5e1aa07be79839e64076784242479053bf1a60 100644
--- a/webrtc/voice_engine/BUILD.gn
+++ b/webrtc/voice_engine/BUILD.gn
@@ -16,10 +16,9 @@ rtc_static_library("audio_coder") {
   deps = [
     "..:webrtc_common",
     "../api/audio_codecs:builtin_audio_decoder_factory",
+    "../api/audio_codecs:builtin_audio_encoder_factory",
     "../modules/audio_coding",
-    "../modules/audio_coding:audio_encoder_factory_interface",
     "../modules/audio_coding:audio_format_conversion",
-    "../modules/audio_coding:builtin_audio_encoder_factory",
     "../modules/audio_coding:rent_a_codec",
   ]
 
@@ -137,6 +136,7 @@ rtc_static_library("voice_engine") {
     "../api:transport_api",
     "../api/audio_codecs:audio_codecs_api",
     "../api/audio_codecs:builtin_audio_decoder_factory",
+    "../api/audio_codecs:builtin_audio_encoder_factory",
     "../audio/utility:audio_frame_operations",
     "../base:rtc_base_approved",
     "../base:rtc_task_queue",
@@ -146,7 +146,6 @@ rtc_static_library("voice_engine") {
     "../call:call_interfaces",
     "../common_audio",
     "../logging:rtc_event_log_api",
-    "../modules/audio_coding:audio_encoder_interface",
     "../modules/audio_coding:audio_format_conversion",
     "../modules/audio_coding:rent_a_codec",
     "../modules/audio_conference_mixer",