Decryptors can report kNoKey to WebMediaPlayer

media/renderers/video_renderer_impl.h

 // Copyright 2013 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.
 
 #ifndef MEDIA_RENDERERS_VIDEO_RENDERER_IMPL_H_
 #define MEDIA_RENDERERS_VIDEO_RENDERER_IMPL_H_
 
 #include <deque>
 
 #include "base/memory/ref_counted.h"
@@ skipping 42 matching lines @@
 
   // VideoRenderer implementation.
   void Initialize(DemuxerStream* stream,
                   const PipelineStatusCB& init_cb,
                   const SetDecryptorReadyCB& set_decryptor_ready_cb,
                   const StatisticsCB& statistics_cb,
                   const BufferingStateCB& buffering_state_cb,
                   const PaintCB& paint_cb,
                   const base::Closure& ended_cb,
                   const PipelineStatusCB& error_cb,
-                  const TimeDeltaCB& get_time_cb) override;
+                  const TimeDeltaCB& get_time_cb,
+                  const base::Closure& waiting_for_decryption_key_cb) override;
   void Flush(const base::Closure& callback) override;
   void StartPlayingFrom(base::TimeDelta timestamp) override;
 
   // PlatformThread::Delegate implementation.
   void ThreadMain() override;
 
  private:
   // Creates a dedicated |thread_| for video rendering.
   void CreateVideoThread();
 
@@ skipping 132 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<VideoRendererImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoRendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_RENDERERS_VIDEO_RENDERER_IMPL_H_