Use ffmpeg for opus decoding, no need to maintain our decoder.

media/test/pipeline_integration_test_base.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/test/pipeline_integration_test_base.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/scoped_vector.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "media/base/cdm_context.h"
 #include "media/base/media_log.h"
 #include "media/base/media_tracks.h"
 #include "media/base/test_data_util.h"
 #include "media/filters/chunk_demuxer.h"
 #if !defined(MEDIA_DISABLE_FFMPEG)
 #include "media/filters/ffmpeg_audio_decoder.h"
 #include "media/filters/ffmpeg_demuxer.h"
 #include "media/filters/ffmpeg_video_decoder.h"
 #endif
 #include "media/filters/file_data_source.h"
 #include "media/filters/memory_data_source.h"
-#include "media/filters/opus_audio_decoder.h"
 #include "media/renderers/audio_renderer_impl.h"
 #include "media/renderers/renderer_impl.h"
 #if !defined(MEDIA_DISABLE_LIBVPX)
 #include "media/filters/vpx_video_decoder.h"
 #endif
 
 using ::testing::_;
 using ::testing::AnyNumber;
 using ::testing::AtLeast;
 using ::testing::AtMost;
@@ skipping 278 matching lines @@
       video_sink_.get(), std::move(video_decoders), false, nullptr,
       new MediaLog()));
 
   ScopedVector<AudioDecoder> audio_decoders;
 
 #if !defined(MEDIA_DISABLE_FFMPEG)
   audio_decoders.push_back(
       new FFmpegAudioDecoder(message_loop_.task_runner(), new MediaLog()));
 #endif
 
-  audio_decoders.push_back(new OpusAudioDecoder(message_loop_.task_runner()));
-
   if (!clockless_playback_) {
     audio_sink_ = new NullAudioSink(message_loop_.task_runner());
   } else {
     clockless_audio_sink_ = new ClocklessAudioSink(OutputDeviceInfo(
         "", OUTPUT_DEVICE_STATUS_OK,
         // Don't allow the audio renderer to resample buffers if hashing is
         // enabled:
         hashing_enabled_
             ? AudioParameters()
             : AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
@@ skipping 64 matching lines @@
   DCHECK(clockless_playback_);
   return clockless_audio_sink_->render_time();
 }
 
 base::TimeTicks DummyTickClock::NowTicks() {
   now_ += base::TimeDelta::FromSeconds(60);
   return now_;
 }
 
 }  // namespace media