EME: Remove obsolete legacy APIs related to versions of prefixed EME

media/mojo/interfaces/content_decryption_module.mojom

Index: media/mojo/interfaces/content_decryption_module.mojom
diff --git a/media/mojo/interfaces/content_decryption_module.mojom b/media/mojo/interfaces/content_decryption_module.mojom
index de4cf9464c0165c67b5fd6a95a84ad66b0ee86aa..9bffecc2ed975de7dc5db62d9634d594711ca496 100644
--- a/media/mojo/interfaces/content_decryption_module.mojom
+++ b/media/mojo/interfaces/content_decryption_module.mojom
@@ -132,13 +132,10 @@ interface ContentDecryptionModule {
 // Session callbacks. See media/base/media_keys.h for details.
 interface ContentDecryptionModuleClient {
   OnSessionMessage(string session_id, CdmMessageType message_type,
-                   array<uint8> message, url.mojom.Url legacy_destination_url);
+                   array<uint8> message);
 
   OnSessionClosed(string session_id);
 
-  OnLegacySessionError(string session_id, CdmException exception,
-                       uint32 system_code, string error_message);
-
   OnSessionKeysChange(string session_id, bool has_additional_usable_key,
                       array<CdmKeyInformation> key_information);