Reduce size by emitting $.foo instead of Isolate.prototype.foo.

lib/compiler/implementation/namer.dart

 // Copyright (c) 2011, 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.
 
 /**
  * Assigns JavaScript identifiers to Dart variables, class-names and members.
  */
 class Namer {
   final Compiler compiler;
 
@@ skipping 178 matching lines @@
   }
 
   String isolateAccess(Element element) {
     return "$CURRENT_ISOLATE.${getName(element)}";
   }
 
   String isolatePropertyAccess(Element element) {
     return "$ISOLATE.prototype.${getName(element)}";
   }
 
-  String isolateBailoutPropertyAccess(Element element) {
-    return '${isolatePropertyAccess(element)}\$bailout';
-  }
-
   String isolateBailoutAccess(Element element) {
     return '${isolateAccess(element)}\$bailout';
   }
 
   String operatorIs(Element element) {
     return 'is\$${getName(element)}';
   }
 
   String safeName(String name) {
     if (jsReserved.contains(name) || name.startsWith('\$')) {
       name = "\$$name";
       assert(!jsReserved.contains(name));
     }
     return name;
   }
 }