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

media/blink/cdm_session_adapter.h

Index: media/blink/cdm_session_adapter.h
diff --git a/media/blink/cdm_session_adapter.h b/media/blink/cdm_session_adapter.h
index 50b1fb35a35665a2da6d14f122d9fa7ceed278be..a17a6426b9078a259c468c469518abe0038dd9b9 100644
--- a/media/blink/cdm_session_adapter.h
+++ b/media/blink/cdm_session_adapter.h
@@ -120,18 +120,13 @@ class CdmSessionAdapter : public base::RefCounted<CdmSessionAdapter> {
   // Callbacks for firing session events.
   void OnSessionMessage(const std::string& session_id,
                         MediaKeys::MessageType message_type,
-                        const std::vector<uint8_t>& message,
-                        const GURL& legacy_destination_url);
+                        const std::vector<uint8_t>& message);
   void OnSessionKeysChange(const std::string& session_id,
                            bool has_additional_usable_key,
                            CdmKeysInfo keys_info);
   void OnSessionExpirationUpdate(const std::string& session_id,
                                  const base::Time& new_expiry_time);
   void OnSessionClosed(const std::string& session_id);
-  void OnLegacySessionError(const std::string& session_id,
-                            MediaKeys::Exception exception_code,
-                            uint32_t system_code,
-                            const std::string& error_message);
 
   // Helper function of the callbacks.
   WebContentDecryptionModuleSessionImpl* GetSession(