Using AudioOption to enable audio network adaptor.

webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus_unittest.cc

Index: webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus_unittest.cc
diff --git a/webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus_unittest.cc b/webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus_unittest.cc
index e88fb89aba0f8008800bd94e7934738d4560ab44..1a7f94680d2844030b5bba6e6caa99aaa20d78bb 100644
--- a/webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus_unittest.cc
+++ b/webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus_unittest.cc
@@ -225,7 +225,7 @@ TEST(AudioEncoderOpusTest,
      InvokeAudioNetworkAdaptorOnSetUplinkPacketLossFraction) {
   auto states = CreateCodec(2, true);
 
-  auto config = CreateEncoderRuntimeConfig();
+  const auto config = CreateEncoderRuntimeConfig();
   EXPECT_CALL(*states.mock_audio_network_adaptor, GetEncoderRuntimeConfig())
       .WillOnce(Return(config));
 
@@ -241,7 +241,7 @@ TEST(AudioEncoderOpusTest,
 TEST(AudioEncoderOpusTest, InvokeAudioNetworkAdaptorOnSetTargetAudioBitrate) {
   auto states = CreateCodec(2, true);
 
-  auto config = CreateEncoderRuntimeConfig();
+  const auto config = CreateEncoderRuntimeConfig();
   EXPECT_CALL(*states.mock_audio_network_adaptor, GetEncoderRuntimeConfig())
       .WillOnce(Return(config));
 
@@ -257,7 +257,7 @@ TEST(AudioEncoderOpusTest, InvokeAudioNetworkAdaptorOnSetTargetAudioBitrate) {
 TEST(AudioEncoderOpusTest, InvokeAudioNetworkAdaptorOnSetRtt) {
   auto states = CreateCodec(2, true);
 
-  auto config = CreateEncoderRuntimeConfig();
+  const auto config = CreateEncoderRuntimeConfig();
   EXPECT_CALL(*states.mock_audio_network_adaptor, GetEncoderRuntimeConfig())
       .WillOnce(Return(config));
 
@@ -273,7 +273,7 @@ TEST(AudioEncoderOpusTest,
      InvokeAudioNetworkAdaptorOnSetReceiverFrameLengthRange) {
   auto states = CreateCodec(2, true);
 
-  auto config = CreateEncoderRuntimeConfig();
+  const auto config = CreateEncoderRuntimeConfig();
   EXPECT_CALL(*states.mock_audio_network_adaptor, GetEncoderRuntimeConfig())
       .WillOnce(Return(config));