Extract invoke-main stub generator.

pkg/compiler/lib/src/js_emitter/new_emitter/model_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.model_emitter;
 
 import '../../dart2jslib.dart' show Compiler;
 import '../../dart_types.dart' show DartType;
 import '../../elements/elements.dart' show ClassElement;
 import '../../js/js.dart' as js;
@@ skipping 98 matching lines @@
            js.js.statement(parseFunctionDescriptorBoilerplate),
        'cyclicThrow':
          backend.emitter.staticFunctionAccess(backend.getCyclicThrowHelper()),
        'outputContainsConstantList': program.outputContainsConstantList,
        'embeddedGlobals': emitEmbeddedGlobals(program),
        'constants': emitConstants(fragment.constants),
        'staticNonFinals':
          emitStaticNonFinalFields(fragment.staticNonFinalFields),
        'operatorIsPrefix': js.string(namer.operatorIsPrefix),
        'eagerClasses': emitEagerClassInitializations(fragment.libraries),
-       'main': fragment.main,
+       'invokeMain': fragment.invokeMain,
        'code': code};
 
     holes.addAll(nativeHoles(program));
 
     return js.js.statement(boilerplate, holes);
   }
 
   Map<String, dynamic> nativeHoles(Program program) {
     Map<String, dynamic> nativeHoles = <String, dynamic>{};
 
@@ skipping 777 matching lines @@
 
   // Add native boilerplate code.
   #nativeIsolateAffinityTagInitialization;
 
   // Initialize eager classes.
   #eagerClasses;
 
   var end = Date.now();
   print('Setup: ' + (end - start) + ' ms.');
 
-  #main();  // Start main.
+  #invokeMain;  // Start main.
 
 }(Date.now(), #code)
 }""";
 
 }