Removed IllegalAccessException and UnsupportedOperationException.

lib/compiler/implementation/lib/constant_map.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.
 
 // This class has no constructor. This is on purpose since the instantiation
 // is shortcut by the compiler.
 class ConstantMap<V> implements Map<String, V> {
   final int length;
   // A constant map is backed by a JavaScript object.
   final _jsObject;
@@ skipping 22 matching lines @@
   Collection<V> getValues() {
     List<V> result = <V>[];
     _keys.forEach((String key) => result.add(this[key]));
     return result;
   }
 
   bool isEmpty() => length == 0;
 
   String toString() => Maps.mapToString(this);
 
-  _throwImmutable() {
-    throw const IllegalAccessException();
+  _throwUnmodifiable() {
+    throw new StateError("Cannot modify unmodifable Map");

[floitsch, 2012/10/23 12:50:32]

unmodifiable

[Lasse Reichstein Nielsen, 2012/10/24 12:32:15]

Done.

   }
-  void operator []=(String key, V val) => _throwImmutable();
-  V putIfAbsent(String key, V ifAbsent()) => _throwImmutable();
-  V remove(String key) => _throwImmutable();
-  void clear() => _throwImmutable();
+  void operator []=(String key, V val) => _throwUnmodifiable();
+  V putIfAbsent(String key, V ifAbsent()) => _throwUnmodifiable();
+  V remove(String key) => _throwUnmodifiable();
+  void clear() => _throwUnmodifiable();
 }
 
 // This class has no constructor. This is on purpose since the instantiation
 // is shortcut by the compiler.
 class ConstantProtoMap<V> extends ConstantMap<V> {
   final V _protoValue;
 
   bool containsKey(String key) {
     if (key == '__proto__') return true;
     return super.containsKey(key);
   }
 
   V operator [](String key) {
     if (key == '__proto__') return _protoValue;
     return super[key];
   }
 }