media: Hook up ContentDecryptionModuleClient in mojo CDM service.

media/mojo/interfaces/content_decryption_module.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/decryptor.mojom";
 
 // Transport layer of media::MediaKeys::Exception (see media/base/media_keys.h).
 // This is used for ContentDecryptionModule (CDM) promise rejections.
@@ skipping 49 matching lines @@
 // An interface that represents a CDM in the Encrypted Media Extensions (EME)
 // spec (https://w3c.github.io/encrypted-media/). See media/base/media_keys.h.
 interface ContentDecryptionModule {
   // See media::MediaKeys::SessionType.
   enum SessionType {
     TEMPORARY_SESSION,
     PERSISTENT_LICENSE_SESSION,
     PERSISTENT_RELEASE_MESSAGE_SESSION
   };
 
+  // Sets ContentDecryptionModuleClient. Must be called before any other calls.
+  SetClient(ContentDecryptionModuleClient client);
+
   // Provides a server certificate to be used to encrypt messages to the
   // license server.
   SetServerCertificate(array<uint8> certificate_data)
       => (CdmPromiseResult result);
 
   // Creates a session with the |init_data_type|, |init_data| and |session_type|
   // provided. If |result.success| is false, the output |session_id| will be
   // null.
   CreateSessionAndGenerateRequest(SessionType session_type,
                                   string init_data_type,
@@ skipping 42 matching lines @@
   OnSessionClosed(string session_id);
 
   OnSessionError(string session_id, CdmException exception,
                  uint32 system_code, string error_message);
 
   OnSessionKeysChange(string session_id, bool has_additional_usable_key,
                       array<CdmKeyInformation> key_information);
 
   OnSessionExpirationUpdate(string session_id, int64 new_expiry_time_usec);
 };