Convert NoMoreElementsException and EmptyQueueException to StateError.

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 55 matching lines @@
     }
   }
 
   String get exceptionName => "NullPointerException";
 
   final String functionName;
   final List arguments;
 }
 
 
-class NoMoreElementsException implements Exception {
-  const NoMoreElementsException();
-  String toString() => "NoMoreElementsException";
-}
-
-
-class EmptyQueueException implements Exception {
-  const EmptyQueueException();
-  String toString() => "EmptyQueueException";
-}
-
-
 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";
 }