Removed IllegalAccessException and UnsupportedOperationException.

lib/core/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.
  * Defaults to an implementation that only carries a simple message.
  */
@@ skipping 16 matching lines @@
  * Exception thrown because of an index outside of the valid range.
  */
 class IndexOutOfRangeException implements Exception {
   const IndexOutOfRangeException(this._value);
 
   String toString() => "IndexOutOfRangeException: $_value";
 
   final _value;
 }
 
-/**
- * Exception thrown because of attempt to modify an immutable object.
- */
-class IllegalAccessException implements Exception {
-  const IllegalAccessException();
-  String toString() => "Attempt to modify an immutable object";
-}
 
 /**
  * Exception thrown when a string or some other data does not have an expected
  * format and cannot be parsed or processed.
  */
 class FormatException implements Exception {
   /**
    * A message describing the format error.
    */
   final String message;
@@ skipping 31 matching lines @@
   String toString() => "NoMoreElementsException";
 }
 
 
 class EmptyQueueException implements Exception {
   const EmptyQueueException();
   String toString() => "EmptyQueueException";
 }
 
 
-class UnsupportedOperationException implements Exception {
-  const UnsupportedOperationException(String this._message);
-  String toString() => "UnsupportedOperationException: $_message";
-  final String _message;
-}
-
-
 class NotImplementedException implements Exception {
   const NotImplementedException([String message]) : this._message = message;
   String toString() => (this._message !== null
                         ? "NotImplementedException: $_message"
                         : "NotImplementedException");
   final String _message;
 }
 
 
 class IllegalJSRegExpException implements Exception {
@@ skipping 10 matching lines @@
 }
 
 /**
  * Exception thrown when a runtime error occurs.
  */
 class RuntimeError implements Exception {
   final message;
   RuntimeError(this.message);
   String toString() => "RuntimeError: $message";
 }