media: Remove SetCdmReadyCB and CdmReadyCB (part 1).

media/cast/sender/h264_vt_encoder_unittest.cc

 // Copyright 2014 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 <stdint.h>
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 122 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(MetadataRecorder);
 };
 
 class EndToEndFrameChecker
     : public base::RefCountedThreadSafe<EndToEndFrameChecker> {
  public:
   explicit EndToEndFrameChecker(const VideoDecoderConfig& config)
       : decoder_(), count_frames_checked_(0) {
     bool decoder_init_result;
     decoder_.Initialize(
-        config, false, media::SetCdmReadyCB(),
+        config, false, nullptr,
         base::Bind(&SaveDecoderInitResult, &decoder_init_result),
         base::Bind(&EndToEndFrameChecker::CompareFrameWithExpected,
                    base::Unretained(this)));
     base::MessageLoop::current()->RunUntilIdle();
     EXPECT_TRUE(decoder_init_result);
   }
 
   void PushExpectation(const scoped_refptr<VideoFrame>& frame) {
     expectations_.push(frame);
   }
@@ skipping 257 matching lines @@
       gfx::Size(kVideoWidth, kVideoHeight), base::TimeDelta()));
 
   // After a power resume event, the factory should produce frames right away
   // because the encoder re-initializes on its own.
   power_source_->GenerateResumeEvent();
   CreateFrameAndMemsetPlane(video_frame_factory.get());
 }
 
 }  // namespace cast
 }  // namespace media