Isolates: allow sending of arbitrary objects in dart2js.

pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart

 // Copyright (c) 2013, 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 dart2js.js_emitter;
 
 class ClassEmitter extends CodeEmitterHelper {
 
   ClassStubGenerator get _stubGenerator =>
       new ClassStubGenerator(compiler, namer, backend);
@@ skipping 67 matching lines @@
       });
     }
 
     jsAst.Expression constructorAst =
         _stubGenerator.generateClassConstructor(classElement, fields);
 
     String constructorName = namer.getNameOfClass(classElement);
     OutputUnit outputUnit =
         compiler.deferredLoadTask.outputUnitForElement(classElement);
     emitter.emitPrecompiledConstructor(
-        outputUnit, constructorName, constructorAst);
+        outputUnit, constructorName, constructorAst, fields);
   }
 
   /// Returns `true` if fields added.
   bool emitFields(Element element,
                   ClassBuilder builder,
                   String superName,
                   { bool classIsNative: false,
                     bool emitStatics: false,
                     bool onlyForRti: false }) {
     assert(!emitStatics || !onlyForRti);
@@ skipping 501 matching lines @@
           js(r'this.$builtinTypeInfo && this.$builtinTypeInfo[#]', index);
     }
     jsAst.Expression convertRtiToRuntimeType = emitter
         .staticFunctionAccess(backend.findHelper('convertRtiToRuntimeType'));
     compiler.dumpInfoTask.registerElementAst(element,
         builder.addProperty(name,
             js('function () { return #(#) }',
                 [convertRtiToRuntimeType, computeTypeVariable])));
   }
 }