[Chromecast] Allow CMA backend to notify of key expiry

chromecast/media/cma/pipeline/media_pipeline_impl.h

 // 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.
 
 #ifndef CHROMECAST_MEDIA_CMA_PIPELINE_MEDIA_PIPELINE_IMPL_H_
 #define CHROMECAST_MEDIA_CMA_PIPELINE_MEDIA_PIPELINE_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 33 matching lines @@
   void SetClient(const MediaPipelineClient& client);
   void SetCdm(int cdm_id);
 
   // MediaPipelineBackendDelegate implementation:
   void OnVideoResolutionChanged(MediaPipelineBackend::VideoDecoder* decoder,
                                 const Size& size) override;
   void OnPushBufferComplete(MediaPipelineBackend::Decoder* decoder,
                             MediaPipelineBackend::BufferStatus status) override;
   void OnEndOfStream(MediaPipelineBackend::Decoder* decoder) override;
   void OnDecoderError(MediaPipelineBackend::Decoder* decoder) override;
+  void OnKeyStatusChanged(const std::string& key_id,
+                          CastKeyStatus key_status,
+                          uint32_t system_code) override;
 
   void InitializeAudio(const ::media::AudioDecoderConfig& config,
                        const AvPipelineClient& client,
                        scoped_ptr<CodedFrameProvider> frame_provider,
                        const ::media::PipelineStatusCB& status_cb);
   void InitializeVideo(const std::vector< ::media::VideoDecoderConfig>& configs,
                        const VideoPipelineClient& client,
                        scoped_ptr<CodedFrameProvider> frame_provider,
                        const ::media::PipelineStatusCB& status_cb);
   void StartPlayingFrom(base::TimeDelta time);
@@ skipping 48 matching lines @@
   base::WeakPtr<MediaPipelineImpl> weak_this_;
   base::WeakPtrFactory<MediaPipelineImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaPipelineImpl);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_CMA_PIPELINE_MEDIA_PIPELINE_IMPL_H_