media: Remove SetCdmReadyCB and CdmReadyCB (part 1).

media/filters/ffmpeg_video_decoder.cc

 // 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.
 
 #include "media/filters/ffmpeg_video_decoder.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 150 matching lines @@
                        0);
   return 0;
 }
 
 std::string FFmpegVideoDecoder::GetDisplayName() const {
   return "FFmpegVideoDecoder";
 }
 
 void FFmpegVideoDecoder::Initialize(const VideoDecoderConfig& config,
                                     bool low_delay,
-                                    const SetCdmReadyCB& /* set_cdm_ready_cb */,
+                                    CdmContext* /* cdm_context */,
                                     const InitCB& init_cb,
                                     const OutputCB& output_cb) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(config.IsValidConfig());
   DCHECK(!output_cb.is_null());
 
   InitCB bound_init_cb = BindToCurrentLoop(init_cb);
 
   if (config.is_encrypted()) {
     bound_init_cb.Run(false);
@@ skipping 190 matching lines @@
   if (!codec || avcodec_open2(codec_context_.get(), codec, NULL) < 0) {
     ReleaseFFmpegResources();
     return false;
   }
 
   av_frame_.reset(av_frame_alloc());
   return true;
 }
 
 }  // namespace media