Introduces "--initializing-formal-access".

pkg/compiler/lib/src/serialization/modelz.dart

Index: pkg/compiler/lib/src/serialization/modelz.dart
diff --git a/pkg/compiler/lib/src/serialization/modelz.dart b/pkg/compiler/lib/src/serialization/modelz.dart
index 3f5f839afe7ffa4d9be9d0cb58269041844e039e..6992c38e826c3fa210f5c093ffdefb433bccb1de 100644
--- a/pkg/compiler/lib/src/serialization/modelz.dart
+++ b/pkg/compiler/lib/src/serialization/modelz.dart
@@ -2041,7 +2041,7 @@ class LocalParameterElementZ extends ParameterElementZ
   ElementKind get kind => ElementKind.PARAMETER;
 }
 
-class InitializingFormalElementZ extends ParameterElementZ
+class InitializingFormalElementZ extends LocalParameterElementZ
     implements InitializingFormalElement {
   FieldElement _fieldElement;
 
@@ -2062,6 +2062,9 @@ class InitializingFormalElementZ extends ParameterElementZ
 
   @override
   ElementKind get kind => ElementKind.INITIALIZING_FORMAL;
+
+  @override
+  bool get isLocal => true;
 }
 
 class LocalVariableElementZ extends DeserializedElementZ