Opus implementation of the AudioDecoderFactoryTemplate API

webrtc/api/audio_codecs/opus/BUILD.gn

Index: webrtc/api/audio_codecs/opus/BUILD.gn
diff --git a/webrtc/api/audio_codecs/opus/BUILD.gn b/webrtc/api/audio_codecs/opus/BUILD.gn
index 426403003eb9333fee124ee1b62014ee715cc708..5a388899674c1f71c0ba1ea0bbb07fdfb5236979 100644
--- a/webrtc/api/audio_codecs/opus/BUILD.gn
+++ b/webrtc/api/audio_codecs/opus/BUILD.gn
@@ -41,3 +41,16 @@ rtc_static_library("audio_encoder_opus") {
     "../../../modules/audio_coding:webrtc_opus",
   ]
 }
+
+rtc_static_library("audio_decoder_opus") {
+  sources = [
+    "audio_decoder_opus.cc",
+    "audio_decoder_opus.h",
+  ]
+  deps = [
+    "..:audio_codecs_api",
+    "../../..:webrtc_common",
+    "../../../base:rtc_base_approved",
+    "../../../modules/audio_coding:webrtc_opus",
+  ]
+}