Simple cleanups of AudioDecoder and AudioEncoder classes

webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest_oldapi.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 967 matching lines @@
       std::vector<ExternalDecoder>());
 }
 
 // Fails Android ARM64. https://code.google.com/p/webrtc/issues/detail?id=4199
 #if defined(WEBRTC_ANDROID) && defined(__aarch64__)
 #define MAYBE_48kHzOutputExternalDecoder DISABLED_48kHzOutputExternalDecoder
 #else
 #define MAYBE_48kHzOutputExternalDecoder 48kHzOutputExternalDecoder
 #endif
 TEST_F(AcmReceiverBitExactnessOldApi, MAYBE_48kHzOutputExternalDecoder) {
-  AudioDecoderPcmU decoder;
+  AudioDecoderPcmU decoder(1);
   MockAudioDecoder mock_decoder;
   // Set expectations on the mock decoder and also delegate the calls to the
   // real decoder.
   EXPECT_CALL(mock_decoder, IncomingPacket(_, _, _, _, _))
       .Times(AtLeast(1))
       .WillRepeatedly(Invoke(&decoder, &AudioDecoderPcmU::IncomingPacket));
   EXPECT_CALL(mock_decoder, Channels())
       .Times(AtLeast(1))
       .WillRepeatedly(Invoke(&decoder, &AudioDecoderPcmU::Channels));
   EXPECT_CALL(mock_decoder, Decode(_, _, _, _, _, _))
@@ skipping 749 matching lines @@
   Run(16000, 8000, 1000);
 }
 
 TEST_F(AcmSwitchingOutputFrequencyOldApi, Toggle8KhzTo16Khz) {
   Run(8000, 16000, 1000);
 }
 
 #endif
 
 }  // namespace webrtc