media: Remove SetCdmReadyCB and CdmReadyCB (part 1).

chromecast/media/cma/decoder/cast_audio_decoder_linux.cc

 // Copyright 2015 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 "chromecast/media/cma/decoder/cast_audio_decoder.h"
 
 #include <stdint.h>
 #include <limits>
 #include <queue>
 #include <utility>
@@ skipping 73 matching lines @@
         config_.extra_data.assign(
             kFakeOpusExtraData,
             kFakeOpusExtraData + sizeof(kFakeOpusExtraData));
       decoder_.reset(new ::media::OpusAudioDecoder(task_runner_));
     } else {
       decoder_.reset(new ::media::FFmpegAudioDecoder(
           task_runner_, make_scoped_refptr(new ::media::MediaLog())));
     }
     decoder_->Initialize(
         media::DecoderConfigAdapter::ToMediaAudioDecoderConfig(config_),
-        ::media::SetCdmReadyCB(),
-        base::Bind(&CastAudioDecoderImpl::OnInitialized, self),
+        nullptr, base::Bind(&CastAudioDecoderImpl::OnInitialized, self),
         base::Bind(&CastAudioDecoderImpl::OnDecoderOutput, self));
     // Unfortunately there is no result from decoder_->Initialize() until later
     // (the pipeline status callback is posted to the task runner).
   }
 
   // CastAudioDecoder implementation:
   bool Decode(const scoped_refptr<media::DecoderBufferBase>& data,
               const DecodeCallback& decode_callback) override {
     DCHECK(!decode_callback.is_null());
     DCHECK(task_runner_->BelongsToCurrentThread());
@@ skipping 184 matching lines @@
       return 2;
     case CastAudioDecoder::OutputFormat::kOutputPlanarFloat:
       return 4;
   }
   NOTREACHED();
   return 1;
 }
 
 }  // namespace media
 }  // namespace chromecast