Implement operator== and hashCode for bound closures.

sdk/lib/_internal/compiler/implementation/js_backend/backend.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.
 
 part of js_backend;
 
 typedef void Recompile(Element element);
 
 class ReturnInfo {
   HType returnType;
@@ skipping 1082 matching lines @@
       } else if (cls == compiler.listClass
                  || cls == compiler.stringClass) {
         // The backend will try to optimize array and string access and use the
         // `ioore` and `iae` helpers directly.
         enqueuer.registerStaticUse(
             compiler.findHelper(const SourceString('ioore')));
         enqueuer.registerStaticUse(
             compiler.findHelper(const SourceString('iae')));
       } else if (cls == compiler.functionClass) {
         enqueuer.registerInstantiatedClass(compiler.closureClass, elements);
+        enqueuer.registerInstantiatedClass(
+            compiler.boundClosureClass, elements);
       } else if (cls == compiler.mapClass) {
         // The backend will use a literal list to initialize the entries
         // of the map.
         enqueuer.registerInstantiatedClass(compiler.listClass, elements);
         enqueuer.registerInstantiatedClass(mapLiteralClass, elements);
         enqueueInResolution(getMapMaker(), elements);
       }
     }
     ClassElement result = null;
     if (cls == compiler.stringClass || cls == jsStringClass) {
@@ skipping 761 matching lines @@
   ClassElement get listImplementation => jsArrayClass;
   ClassElement get constListImplementation => jsArrayClass;
   ClassElement get fixedListImplementation => jsFixedArrayClass;
   ClassElement get growableListImplementation => jsExtendableArrayClass;
   ClassElement get mapImplementation => mapLiteralClass;
   ClassElement get constMapImplementation => constMapLiteralClass;
   ClassElement get typeImplementation => typeLiteralClass;
   ClassElement get boolImplementation => jsBoolClass;
   ClassElement get nullImplementation => jsNullClass;
 }