media: Remove SetCdmReadyCB and CdmReadyCB (part 1).

media/filters/gpu_video_decoder.h

Index: media/filters/gpu_video_decoder.h
diff --git a/media/filters/gpu_video_decoder.h b/media/filters/gpu_video_decoder.h
index 3223552b3ab09066fa1cc5ed46d4df9379e44b98..1c86862fc7d5bca439975b1f25f3adb4dd68173d 100644
--- a/media/filters/gpu_video_decoder.h
+++ b/media/filters/gpu_video_decoder.h
@@ -51,7 +51,7 @@ class MEDIA_EXPORT GpuVideoDecoder
   std::string GetDisplayName() const override;
   void Initialize(const VideoDecoderConfig& config,
                   bool low_delay,
-                  const SetCdmReadyCB& set_cdm_ready_cb,
+                  CdmContext* cdm_context,
                   const InitCB& init_cb,
                   const OutputCB& output_cb) override;
   void Decode(const scoped_refptr<DecoderBuffer>& buffer,
@@ -107,10 +107,6 @@ class MEDIA_EXPORT GpuVideoDecoder
 
   typedef std::map<int32_t, PictureBuffer> PictureBufferMap;
 
-  // Callback to set CDM. |cdm_attached_cb| is called when the decryptor in the
-  // CDM has been completely attached to the pipeline.
-  void SetCdm(CdmContext* cdm_context, const CdmAttachedCB& cdm_attached_cb);
-
   void DeliverFrame(const scoped_refptr<VideoFrame>& frame);
 
   // Static method is to allow it to run even after GVD is deleted.
@@ -171,10 +167,6 @@ class MEDIA_EXPORT GpuVideoDecoder
 
   VideoDecoderConfig config_;
 
-  // Callback to request/cancel CDM ready notification.
-  SetCdmReadyCB set_cdm_ready_cb_;
-  CdmAttachedCB cdm_attached_cb_;
-
   // Shared-memory buffer pool.  Since allocating SHM segments requires a
   // round-trip to the browser process, we keep allocation out of the
   // steady-state of the decoder.