dart2js: support isolates in the startup-emitter.

pkg/compiler/lib/src/js_emitter/full_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.full_emitter;
 
 import 'dart:convert';
 import 'dart:collection' show HashMap;
 
 import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames;
@@ skipping 382 matching lines @@
       case JsBuiltin.getMetadata:
         String metadataAccess =
             generateEmbeddedGlobalAccessString(embeddedNames.METADATA);
         return jsAst.js.expressionTemplateFor("$metadataAccess[#]");
 
       case JsBuiltin.getType:
         String typesAccess =
             generateEmbeddedGlobalAccessString(embeddedNames.TYPES);
         return jsAst.js.expressionTemplateFor("$typesAccess[#]");
 
+      case JsBuiltin.createDartClosureFromNameOfStaticFunction:
+        // The global-functions map contains a map from name to tear-off
+        // getters.
+        String functionGettersMap =
+            generateEmbeddedGlobalAccessString(embeddedNames.GLOBAL_FUNCTIONS);
+        return jsAst.js.expressionTemplateFor("$functionGettersMap[#]()");
+
       default:
         compiler.internalError(NO_LOCATION_SPANNABLE,
             "Unhandled Builtin: $builtin");
         return null;
     }
   }
 
   List<jsAst.Statement> buildTrivialNsmHandlers(){
     return nsmEmitter.buildTrivialNsmHandlers();
   }
@@ skipping 1687 matching lines @@
     for (Element element in compiler.enqueuer.codegen.newlyEnqueuedElements) {
       if (element.isInstanceMember) {
         cachedClassBuilders.remove(element.enclosingClass);
 
         nativeEmitter.cachedBuilders.remove(element.enclosingClass);
 
       }
     }
   }
 }