media: Enable Opus support in Clank <video> and MSE

content/renderer/media/android/media_source_delegate.cc

 // Copyright 2013 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 "content/renderer/media/android/media_source_delegate.h"
 
 #include <limits>
 #include <string>
 #include <vector>
 
@@ skipping 719 matching lines @@
     return false;
   if (is_audio && audio_stream_) {
     media::AudioDecoderConfig config = audio_stream_->audio_decoder_config();
     configs->audio_codec = config.codec();
     configs->audio_channels =
         media::ChannelLayoutToChannelCount(config.channel_layout());
     configs->audio_sampling_rate = config.samples_per_second();
     configs->is_audio_encrypted = config.is_encrypted();
     configs->audio_extra_data = std::vector<uint8>(
         config.extra_data(), config.extra_data() + config.extra_data_size());
+    configs->audio_codec_delay_ns = static_cast<int64_t>(
+        config.codec_delay()  *
+        (static_cast<double>(base::Time::kNanosecondsPerSecond) /
+         config.samples_per_second()));
+    configs->audio_seek_preroll_ns =
+        config.seek_preroll().InMicroseconds() *
+        base::Time::kNanosecondsPerMicrosecond;
     return true;
   }
   if (!is_audio && video_stream_) {
     media::VideoDecoderConfig config = video_stream_->video_decoder_config();
     configs->video_codec = config.codec();
     configs->video_size = config.natural_size();
     configs->is_video_encrypted = config.is_encrypted();
     configs->video_extra_data = std::vector<uint8>(
         config.extra_data(), config.extra_data() + config.extra_data_size());
     return true;
   }
   return false;
 }
 
 }  // namespace content