Revert "Remove Compiler.assembledCode."

pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart

 // Copyright (c) 2014, 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 dart2js.new_js_emitter.emitter;
 
 import '../model.dart';
 import 'model_emitter.dart';
 import '../../common.dart';
 import '../../elements/elements.dart' show FieldElement;
 import '../../js/js.dart' as js;
 
 import '../../js_backend/js_backend.dart' show Namer, JavaScriptBackend;
 import '../../js_emitter/js_emitter.dart' as emitterTask show
     CodeEmitterTask,
     Emitter;
 
 class Emitter implements emitterTask.Emitter {
   final Compiler _compiler;
   final Namer namer;
   final ModelEmitter _emitter;
 
   Emitter(Compiler compiler, Namer namer)
       : this._compiler = compiler,
         this.namer = namer,
         _emitter = new ModelEmitter(compiler, namer);
 
   @override
-  int emitProgram(Program program) {
-    return _emitter.emitProgram(program);
+  void emitProgram(Program program) {
+    _emitter.emitProgram(program);
   }
 
   // TODO(floitsch): copied from OldEmitter. Adjust or share.
   @override
   bool isConstantInlinedOrAlreadyEmitted(ConstantValue constant) {
     if (constant.isFunction) return true;    // Already emitted.
     if (constant.isPrimitive) return true;   // Inlined.
     if (constant.isDummy) return true;       // Inlined.
     // The name is null when the constant is already a JS constant.
     // TODO(floitsch): every constant should be registered, so that we can
@@ skipping 89 matching lines @@
   @override
   js.Expression typeAccess(Element element) {
     // TODO(floitsch): minify 'ensureResolved'.
     // TODO(floitsch): don't emit `ensureResolved` for eager classes.
     return js.js('#.ensureResolved()', _globalPropertyAccess(element));
   }
 
   @override
   void invalidateCaches() {}
 }