Motown: New wrapper classes for ffmpeg format context and io context

services/media/framework_ffmpeg/ffmpeg_decoder.cc

 // Copyright 2016 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 "services/media/framework_ffmpeg/av_codec_context.h"
 #include "services/media/framework_ffmpeg/ffmpeg_audio_decoder.h"
 #include "services/media/framework_ffmpeg/ffmpeg_decoder.h"
-#include "services/media/framework_ffmpeg/ffmpeg_type_converters.h"
 #include "services/media/framework_ffmpeg/ffmpeg_video_decoder.h"
 
 namespace mojo {
 namespace media {
 
 Result FfmpegDecoder::Create(
     const StreamType& stream_type,
     std::shared_ptr<Decoder>* decoder_out) {
   DCHECK(decoder_out);
 
-  AvCodecContextPtr av_codec_context(AVCodecContextFromStreamType(stream_type));
+  AvCodecContextPtr av_codec_context(AvCodecContext::Create(stream_type));
   if (!av_codec_context) {
     return Result::kUnsupportedOperation;
   }
 
   AVCodec* ffmpeg_decoder = avcodec_find_decoder(av_codec_context->codec_id);
   if (ffmpeg_decoder == nullptr) {
     return Result::kUnsupportedOperation;
   }
 
   int r = avcodec_open2(av_codec_context.get(), ffmpeg_decoder, nullptr);
@@ skipping 12 matching lines @@
       break;
     default:
       return Result::kUnsupportedOperation;
   }
 
   return Result::kOk;
 }
 
 } // namespace media
 } // namespace mojo