Adding AudioNetworkAdaptor interfaces.

webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.gypi

Index: webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.gypi
diff --git a/webrtc/examples/androidapp/third_party/autobanh/BUILD.gn b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.gypi
similarity index 63%
copy from webrtc/examples/androidapp/third_party/autobanh/BUILD.gn
copy to webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.gypi
index d5f6b0f2d6a043aa2b439e30648e39cbd5bc20d1..aa77709cf0f0df62d9de5a9cf82879500403b79d 100644
--- a/webrtc/examples/androidapp/third_party/autobanh/BUILD.gn
+++ b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.gypi
@@ -6,8 +6,14 @@
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
-import("//build/config/android/rules.gni")
-
-android_java_prebuilt("autobanh_java") {
-  jar_path = "lib/autobanh.jar"
+{
+  'targets': [
+    { 'target_name': 'audio_network_adaptor',
+      'type': 'static_library',
+      'sources': [
+        'audio_network_adaptor.cc',
+        'include/audio_network_adaptor.h'
+      ], # source
+    },
+  ], # targets
 }