Removed IllegalAccessException and UnsupportedOperationException.

lib/compiler/implementation/lib/js_helper.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.
 
 #library('dart:_js_helper');
 
 #import('dart:coreimpl');
 
 #source('constant_map.dart');
 #source('native_helper.dart');
@@ skipping 305 matching lines @@
     }
     checkMutable(a, 'indexed set');
     JS('Object', r'#[#] = #', a, index, value);
     return;
   }
   UNINTERCEPTED(a[index] = value);
 }
 
 checkMutable(list, reason) {
   if (JS('bool', r'!!(#.immutable$list)', list)) {
-    throw new UnsupportedOperationException(reason);
+    throw new UnsupportedError(reason);
   }
 }
 
 checkGrowable(list, reason) {
   if (JS('bool', r'!!(#.fixed$length)', list)) {
-    throw new UnsupportedOperationException(reason);
+    throw new UnsupportedError(reason);
   }
 }
 
 String S(value) {
   var res = value.toString();
   if (res is !String) throw new ArgumentError(value);
   return res;
 }
 
 class ListIterator<T> implements Iterator<T> {
@@ skipping 698 matching lines @@
 }
 
 /**
  * Represents the type of Null. The compiler treats this specially.
  * TODO(lrn): Null should be defined in core. It's a class, like int.
  * It just happens to act differently in assignability tests and,
  * like int, can't be extended or implemented.
  */
 class Null {
   factory Null() {
-    throw new UnsupportedOperationException('new Null()');
+    throw new UnsupportedError('new Null()');
   }
 }
 
 setRuntimeTypeInfo(target, typeInfo) {
   // We have to check for null because factories may return null.
   if (target != null) JS('var', r'#.builtin$typeInfo = #', target, typeInfo);
 }
 
 getRuntimeTypeInfo(target) {
   if (target == null) return null;
@@ skipping 339 matching lines @@
     JS('void', r'#.runtimeTypeCache[#] = #', JS_CURRENT_ISOLATE(), key,
        runtimeType);
   }
   return runtimeType;
 }
 
 String getRuntimeTypeString(var object) {
   var typeInfo = JS('Object', r'#.builtin$typeInfo', object);
   return JS('String', r'#.runtimeType', typeInfo);
 }