Decryptors can report kNoKey to WebMediaPlayer

media/base/video_renderer.h

 // 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.
 
 #ifndef MEDIA_BASE_VIDEO_RENDERER_H_
 #define MEDIA_BASE_VIDEO_RENDERER_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
@@ skipping 35 matching lines @@
   // data or has enough data to continue playback.
   //
   // |paint_cb| is executed on the video frame timing thread whenever a new
   // frame is available for painting. Can be called from any thread.
   //
   // |ended_cb| is executed when video rendering has reached the end of stream.
   //
   // |error_cb| is executed if an error was encountered after initialization.
   //
   // |get_time_cb| is used to query the current media playback time.
-  virtual 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) = 0;
+  //
+  // |waiting_for_encryption_key_cb| is executed whenever the stream needs

[ddorwin, 2015/02/19 05:33:17]

dittos

[jrummell, 2015/02/23 22:06:32]

Done.

+  // a new key provided in order to decrypt the data.
+  virtual 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,
+      const base::Closure& waiting_for_encryption_key_cb) = 0;
 
   // Discards any video data and stops reading from |stream|, executing
   // |callback| when completed.
   //
   // Clients should expect |buffering_state_cb| to be called with
   // BUFFERING_HAVE_NOTHING while flushing is in progress.
   virtual void Flush(const base::Closure& callback) = 0;
 
   // Starts playback at |timestamp| by reading from |stream| and decoding and
   // rendering video.
   //
   // Only valid to call after a successful Initialize() or Flush().
   virtual void StartPlayingFrom(base::TimeDelta timestamp) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(VideoRenderer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_VIDEO_RENDERER_H_