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

media/filters/decrypting_video_decoder.h

Index: media/filters/decrypting_video_decoder.h
diff --git a/media/filters/decrypting_video_decoder.h b/media/filters/decrypting_video_decoder.h
index 1ac97b81f32d04455f27549af2997554252823a0..0651edbe38d0b0c2c66db6bbf9bb65db805e1e80 100644
--- a/media/filters/decrypting_video_decoder.h
+++ b/media/filters/decrypting_video_decoder.h
@@ -31,7 +31,6 @@ class MEDIA_EXPORT DecryptingVideoDecoder : public VideoDecoder {
   DecryptingVideoDecoder(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
       const scoped_refptr<MediaLog>& media_log,
-      const SetCdmReadyCB& set_cdm_ready_cb,
       const base::Closure& waiting_for_decryption_key_cb);
   ~DecryptingVideoDecoder() override;
 
@@ -39,6 +38,7 @@ class MEDIA_EXPORT DecryptingVideoDecoder : public VideoDecoder {
   std::string GetDisplayName() const override;
   void Initialize(const VideoDecoderConfig& config,
                   bool low_delay,
+                  const SetCdmReadyCB& set_cdm_ready_cb,
                   const InitCB& init_cb,
                   const OutputCB& output_cb) override;
   void Decode(const scoped_refptr<DecoderBuffer>& buffer,