refactor: Encryption errors

lib/encryption/encryption.dart

@@ -46,13 +46,6 @@ class Encryption {
   String get fingerprintKey => olmManager.fingerprintKey;
   String get identityKey => olmManager.identityKey;
 
-  /// ToDeviceEventDecryptionError erros are coming here.
-  final StreamController<ToDeviceEventDecryptionError>
-      onToDeviceEventDecryptionError = StreamController.broadcast();
-
-  /// All other erros are coming here.
-  final StreamController<SdkError> onError = StreamController.broadcast();
-
   KeyManager keyManager;
   OlmManager olmManager;
   KeyVerificationManager keyVerificationManager;
@@ -145,11 +138,10 @@ class Encryption {
       Logs.error(
           '[LibOlm] Could not decrypt to device event from ${event.sender} with content: ${event.content}\n${e.toString()}',
           s);
-      onToDeviceEventDecryptionError.add(
-        ToDeviceEventDecryptionError(
+      client.onEncryptionError.add(
+        SdkError(
           exception: e is Exception ? e : Exception(e),
           stackTrace: s,
-          toDeviceEvent: event,
         ),
       );
       return event;

lib/encryption/utils/bootstrap.dart

@@ -557,7 +557,9 @@ class Bootstrap {
           '[Bootstrapping] Error setting up online key backup: ' + e.toString(),
           s);
       state = BootstrapState.error;
-      encryption.onError.add(SdkError(exception: e, stackTrace: s));
+      encryption.client.onEncryptionError.add(
+        SdkError(exception: e, stackTrace: s),
+      );
       return;
     }
     state = BootstrapState.done;

lib/src/client.dart

@@ -573,9 +573,8 @@ class Client extends MatrixApi {
   /// Synchronization erros are coming here.
   final StreamController<SdkError> onSyncError = StreamController.broadcast();
 
-  /// Synchronization erros are coming here.
-  @Deprecated('Please use encryption.onToDeviceEventDecryptionError instead')
-  final StreamController<ToDeviceEventDecryptionError> onOlmError =
+  /// Encryption erros are coming here.
+  final StreamController<SdkError> onEncryptionError =
       StreamController.broadcast();
 
   /// This is called once, when the first sync has received.