Let AudioCodingModule::SendCodec return Maybe<CodecInst>

webrtc/modules/audio_coding/main/test/TestVADDTX.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 191 matching lines @@
   Run(webrtc::test::ResourcePath("audio_coding/testfile32kHz", "pcm"),
       32000, 1, out_filename.str(), !new_outfile, expects);
 }
 
 void TestWebRtcVadDtx::SetVAD(bool enable_dtx, bool enable_vad,
                               ACMVADMode vad_mode) {
   ACMVADMode mode;
   EXPECT_EQ(0, acm_send_->SetVAD(enable_dtx, enable_vad, vad_mode));
   EXPECT_EQ(0, acm_send_->VAD(&dtx_enabled_, &vad_enabled_, &mode));
 
-  CodecInst codec_param;
-  acm_send_->SendCodec(&codec_param);
-  if (STR_CASE_CMP(codec_param.plname, "opus") == 0) {
+  auto codec_param = acm_send_->SendCodec();
+  ASSERT_TRUE(codec_param);
+  if (STR_CASE_CMP(codec_param->plname, "opus") == 0) {
     // If send codec is Opus, WebRTC VAD/DTX cannot be used.
     enable_dtx = enable_vad = false;
   }
 
   EXPECT_EQ(dtx_enabled_ , enable_dtx); // DTX should be set as expected.
 
   if (dtx_enabled_) {
     EXPECT_TRUE(vad_enabled_); // WebRTC DTX cannot run without WebRTC VAD.
   } else {
     // Using no DTX should not affect setting of VAD.
@@ skipping 37 matching lines @@
 
   EXPECT_EQ(0, acm_send_->EnableOpusDtx());
 
   expects[kEmptyFrame] = 1;
   Run(webrtc::test::ResourcePath("audio_coding/teststereo32kHz", "pcm"),
       32000, 2, out_filename, true, expects);
 #endif
 }
 
 }  // namespace webrtc