Get CdmContext in MojoAudioDecoderService

media/mojo/services/mojo_audio_decoder_service.h

Index: media/mojo/services/mojo_audio_decoder_service.h
diff --git a/media/mojo/services/mojo_audio_decoder_service.h b/media/mojo/services/mojo_audio_decoder_service.h
index 558d0eb590c1f25f5d70e074c9c8897f2f6c5319..c07458975e9a0f447bb27bbc298cc013b45f228a 100644
--- a/media/mojo/services/mojo_audio_decoder_service.h
+++ b/media/mojo/services/mojo_audio_decoder_service.h
@@ -15,9 +15,12 @@
 
 namespace media {
 
+class MojoCdmServiceContext;
+
 class MojoAudioDecoderService : public interfaces::AudioDecoder {
  public:
   MojoAudioDecoderService(
+      base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context,
       scoped_ptr<media::AudioDecoder> decoder,
       mojo::InterfaceRequest<interfaces::AudioDecoder> request);
 
@@ -61,6 +64,9 @@ class MojoAudioDecoderService : public interfaces::AudioDecoder {
   // DataPipe for serializing the data section of DecoderBuffer.
   mojo::ScopedDataPipeConsumerHandle consumer_handle_;
 
+  // A helper object required to get CDM from CDM id.
+  base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context_;
+
   // The AudioDecoder that does actual decoding work.
   scoped_ptr<media::AudioDecoder> decoder_;