Adding AudioNetworkAdaptor interfaces.

webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.cc

Index: webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.cc
diff --git a/webrtc/modules/audio_coding/neteq/packet.cc b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.cc
similarity index 55%
copy from webrtc/modules/audio_coding/neteq/packet.cc
copy to webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.cc
index 8a19fe4d5923d5e22a5b485600c6da0c5f3856ba..bf79d786d6ce6ea7859442127b9311dfe149c03a 100644
--- a/webrtc/modules/audio_coding/neteq/packet.cc
+++ b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor.cc
@@ -8,12 +8,15 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/modules/audio_coding/neteq/packet.h"
+#include "webrtc/modules/audio_coding/audio_network_adaptor/include/audio_network_adaptor.h"
 
 namespace webrtc {
 
-Packet::Packet() = default;
+AudioNetworkAdaptor::EncoderRuntimeConfig::EncoderRuntimeConfig() = default;
 
-Packet::~Packet() = default;
+AudioNetworkAdaptor::EncoderRuntimeConfig::~EncoderRuntimeConfig() = default;
+
+AudioNetworkAdaptor::EncoderRuntimeConfig::EncoderRuntimeConfig(
+    const EncoderRuntimeConfig& other) = default;
 
 }  // namespace webrtc