media: Hook up ContentDecryptionModuleClient in mojo CDM service.

media/mojo/interfaces/decryptor.mojom

 // 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.
 
 module mojo;
 
 import "media/mojo/interfaces/demuxer_stream.mojom";
 import "media/mojo/interfaces/media_types.mojom";
 
 // TODO(xhwang): Add mojo types for AudioBuffer and VideoFrame.
 struct AudioBuffer {};
 struct VideoFrame {};
 
-// TODO(xhwang): Client syntax has been removed, so a new mechanism for client
-// discovery must be added to this interface.  See http://crbug.com/451321.
-
 // Interface for decrypting (and decoding) encrypted streams.
 // See media/base/decryptor.h for details.
 interface Decryptor {
   // Status of a decrypt or decrypt-and-decode operation. The returned
   // buffer/frame of such an operation is NOT null iff the status is SUCCESS.
   enum Status {
     SUCCESS,  // Successfully completed. Decrypted buffer ready.
     NO_KEY,  // No key is available to decrypt.
     NEED_MORE_DATA,  // Decoder needs more data to produce an output.
     ERROR  // Key is available but an error occurred during decryption.
@@ skipping 40 matching lines @@
   // After this operation, the decoder is set to an uninitialized state.
   // The decoder can be reinitialized after it is deinitialized.
   DeinitializeDecoder(DemuxerStream.Type stream_type);
 };
 
 interface DecryptorClient {
   // Indicates that a new usable key is available in the CDM associated with the
   // Decryptor.
   OnNewUsableKey();
 };