Revert of media: Pass SetCdmReadyCB in {Audio|Video}Decoder::Initialize().

media/filters/opus_audio_decoder.h

 // 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.
 
 #ifndef MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_
 #define MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_
 
 #include "base/callback.h"
 #include "base/time/time.h"
 #include "media/base/audio_decoder.h"
@@ skipping 15 matching lines @@
 
 class MEDIA_EXPORT OpusAudioDecoder : public AudioDecoder {
  public:
   explicit OpusAudioDecoder(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
   ~OpusAudioDecoder() override;
 
   // AudioDecoder implementation.
   std::string GetDisplayName() const override;
   void Initialize(const AudioDecoderConfig& config,
-                  const SetCdmReadyCB& set_cdm_ready_cb,
                   const InitCB& init_cb,
                   const OutputCB& output_cb) override;
   void Decode(const scoped_refptr<DecoderBuffer>& buffer,
               const DecodeCB& decode_cb) override;
   void Reset(const base::Closure& closure) override;
 
  private:
   // Reads from the demuxer stream with corresponding callback method.
   void ReadFromDemuxerStream();
   void DecodeBuffer(const scoped_refptr<DecoderBuffer>& input,
@@ skipping 11 matching lines @@
   OutputCB output_cb_;
   OpusMSDecoder* opus_decoder_;
   scoped_ptr<AudioDiscardHelper> discard_helper_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(OpusAudioDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_