Update smoothed bitrate.

webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng_unittest.cc

 /*
  *  Copyright (c) 2014 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 201 matching lines @@
 
 TEST_F(AudioEncoderCngTest, CheckFrameSizePropagation) {
   CreateCng(MakeCngConfig());
   EXPECT_CALL(*mock_encoder_, Num10MsFramesInNextPacket())
       .WillOnce(Return(17U));
   EXPECT_EQ(17U, cng_->Num10MsFramesInNextPacket());
 }
 
 TEST_F(AudioEncoderCngTest, CheckTargetAudioBitratePropagation) {
   CreateCng(MakeCngConfig());
-  EXPECT_CALL(*mock_encoder_, OnReceivedTargetAudioBitrate(4711));
-  cng_->OnReceivedTargetAudioBitrate(4711);
+  EXPECT_CALL(*mock_encoder_,
+              OnReceivedTargetAudioBitrate(4711, rtc::Optional<int64_t>()));
+  cng_->OnReceivedTargetAudioBitrate(4711, rtc::Optional<int64_t>());
 }
 
 TEST_F(AudioEncoderCngTest, CheckPacketLossFractionPropagation) {
   CreateCng(MakeCngConfig());
   EXPECT_CALL(*mock_encoder_, OnReceivedUplinkPacketLossFraction(0.5));
   cng_->OnReceivedUplinkPacketLossFraction(0.5);
 }
 
 TEST_F(AudioEncoderCngTest, EncodeCallsVad) {
   EXPECT_CALL(*mock_encoder_, Num10MsFramesInNextPacket())
@@ skipping 262 matching lines @@
       .WillRepeatedly(Return(7U));
   for (int i = 0; i < 6; ++i)
     Encode();
   EXPECT_DEATH(Encode(),
                "Frame size cannot be larger than 60 ms when using VAD/CNG.");
 }
 
 #endif  // GTEST_HAS_DEATH_TEST
 
 }  // namespace webrtc