Less inequivalence on Hello World!

pkg/compiler/lib/src/js_emitter/lazy_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.js_emitter.lazy_emitter;
 
 import 'package:js_runtime/shared/embedded_names.dart' show JsBuiltin;
 
 import '../../common.dart';
 import '../../compiler.dart' show Compiler;
@@ skipping 33 matching lines @@
 
   Emitter(this._compiler, this.namer, NativeEmitter nativeEmitter,
       this._closedWorld, CodeEmitterTask task)
       : _emitter = new ModelEmitter(
             _compiler, namer, nativeEmitter, _closedWorld, task);
 
   DiagnosticReporter get reporter => _compiler.reporter;
 
   @override
   int emitProgram(ProgramBuilder programBuilder) {
-    Program program = programBuilder.buildProgram();
+    Program program = programForTesting = programBuilder.buildProgram();
     return _emitter.emitProgram(program);
   }
 
   // TODO(floitsch): copied from full emitter. Adjust or share.
   @override
   bool isConstantInlinedOrAlreadyEmitted(ConstantValue constant) {
     return _emitter.isConstantInlinedOrAlreadyEmitted(constant);
   }
 
   // TODO(floitsch): copied from full emitter. Adjust or share.
@@ skipping 100 matching lines @@
         reporter.internalError(
             NO_LOCATION_SPANNABLE, "Unhandled Builtin: $builtin");
         return null;
     }
   }
 
   @override
   // TODO(het): Generate this correctly
   int generatedSize(OutputUnit unit) => 0;
 }