Removes constructor initializer in named parameter of private member

corelib/src/exceptions.dart

 // Copyright (c) 2012, 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.
 
 // Exceptions are thrown either by the VM or from Dart code.
 
 /**
  * Interface implemented by all core library exceptions.
  */
 interface Exception default ExceptionImplementation {
@@ skipping 20 matching lines @@
 }
 
 
 /**
  * Exception thrown because of non-existing receiver's method.
  */
 class NoSuchMethodException implements Exception {
   const NoSuchMethodException(Object this._receiver,
                               String this._functionName,
                               List this._arguments,
-                              [List this._existingArgumentNames = null]);
+                              [List existingArgumentNames = null]) : 
+                                this._existingArgumentNames = existingArgumentNames;
 
   String toString() {
     StringBuffer sb = new StringBuffer();
     for (int i = 0; i < _arguments.length; i++) {
       if (i > 0) {
         sb.add(", ");
       }
       sb.add(_arguments[i]);
     }
     if (_existingArgumentNames === null) {
@@ skipping 100 matching lines @@
 
 
 class UnsupportedOperationException implements Exception {
   const UnsupportedOperationException(String this._message);
   String toString() => "UnsupportedOperationException: $_message";
   final String _message;
 }
 
 
 class NotImplementedException implements Exception {
-  const NotImplementedException([String this._message]);
+  const NotImplementedException([String message]) : this._message = message;
   String toString() => (this._message !== null
                         ? "NotImplementedException: $_message"
                         : "NotImplementedException");
   final String _message;
 }
 
 
 class IllegalJSRegExpException implements Exception {
   const IllegalJSRegExpException(String this._pattern, String this._errmsg);
   String toString() => "IllegalJSRegExpException: '$_pattern' '$_errmsg'";
   final String _pattern;
   final String _errmsg;
 }
 
 
 class IntegerDivisionByZeroException implements Exception {
   const IntegerDivisionByZeroException();
   String toString() => "IntegerDivisionByZeroException";
 }