Introduces "--initializing-formal-access".

pkg/compiler/lib/src/diagnostics/messages.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * The messages in this file should meet the following guide lines:
  *
  * 1. The message should be a complete sentence starting with an uppercase
  * letter, and ending with a period.
  *
@@ skipping 658 matching lines @@
           examples: const [
             """
 class C {
   void f() {}
   int get f => 1;
 }
 
 main() {
   new C();
 }
+""",
+            """
+class C {
+  int x;
+  C(this.x, int x);
+}
 
+main() {
+  new C(4, 2);
+}
 """
           ]),
 
       MessageKind.EXISTING_DEFINITION: const MessageTemplate(
           MessageKind.EXISTING_DEFINITION, "Existing definition of '#{name}'."),
 
       MessageKind.DUPLICATE_IMPORT: const MessageTemplate(
           MessageKind.DUPLICATE_IMPORT, "Duplicate import of '#{name}'."),
 
       MessageKind.HIDDEN_IMPORT: const MessageTemplate(
@@ skipping 3061 matching lines @@
   static String convertToString(value) {
     if (value is ErrorToken) {
       // Shouldn't happen.
       return value.assertionMessage;
     } else if (value is Token) {
       value = value.value;
     }
     return '$value';
   }
 }