Adding a new ChangeLogger class to handle UMA logging of bitrates

webrtc/modules/audio_coding/main/acm2/codec_owner_unittest.cc

 /*
  *  Copyright (c) 2015 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 13 matching lines @@
 const int kDataLengthSamples = 80;
 const int kPacketSizeSamples = 2 * kDataLengthSamples;
 const int16_t kZeroData[kDataLengthSamples] = {0};
 const CodecInst kDefaultCodecInst =
     {0, "pcmu", 8000, kPacketSizeSamples, 1, 64000};
 const int kCngPt = 13;
 }  // namespace
 
 class CodecOwnerTest : public ::testing::Test {
  protected:
-  CodecOwnerTest() : timestamp_(0) {}
+  CodecOwnerTest() : codec_owner_(nullptr), timestamp_(0) {}
 
   void CreateCodec() {
     codec_owner_.SetEncoders(kDefaultCodecInst, kCngPt, VADNormal, -1);
   }
 
   void EncodeAndVerify(size_t expected_out_length,
                        uint32_t expected_timestamp,
                        int expected_payload_type,
                        int expected_send_even_if_empty) {
     uint8_t out[kPacketSizeSamples];
@@ skipping 48 matching lines @@
   // Verify NoEncoding.
   expected_timestamp += 2 * kDataLengthSamples;
   {
     SCOPED_TRACE("Fourth encoding");
     EncodeAndVerify(0, expected_timestamp, kCngPt, 1);
   }
 }
 
 TEST_F(CodecOwnerTest, ExternalEncoder) {
   MockAudioEncoderMutable external_encoder;
-  EXPECT_CALL(external_encoder, GetTargetBitrate())
-      .WillRepeatedly(Return(-1));  // Flag adaptive bitrate (doesn't matter).
   codec_owner_.SetEncoders(&external_encoder, -1, VADNormal, -1);
   const int kSampleRateHz = 8000;
   const int kPacketSizeSamples = kSampleRateHz / 100;
   int16_t audio[kPacketSizeSamples] = {0};
   uint8_t encoded[kPacketSizeSamples];
   AudioEncoder::EncodedInfo info;
   EXPECT_CALL(external_encoder, SampleRateHz())
       .WillRepeatedly(Return(kSampleRateHz));
 
   {
@@ skipping 28 matching lines @@
   // Change back to external encoder again.
   codec_owner_.SetEncoders(&external_encoder, -1, VADNormal, -1);
   info = codec_owner_.Encoder()->Encode(2, audio, arraysize(audio),
                                         arraysize(encoded), encoded);
   EXPECT_EQ(2u, info.encoded_timestamp);
   external_encoder.Reset();  // Dummy call to mark the sequence of expectations.
 }
 
 }  // namespace acm2
 }  // namespace webrtc