Parameterize the native_handler with the world/enqueuer.

dart/lib/compiler/implementation/native_handler.dart

 // Copyright (c) 2012, 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('native');
 #import('dart:uri');
 #import('leg.dart');
 #import('elements/elements.dart');
 #import('scanner/scannerlib.dart');
 #import('ssa/ssa.dart');
 #import('tree/tree.dart');
 #import('util/util.dart');
 
-void processNativeClasses(CodeEmitterTask emitter,
+void processNativeClasses(Enqueuer world,
+                          CodeEmitterTask emitter,
                           Collection<LibraryElement> libraries) {
   for (LibraryElement library in libraries) {
-    processNativeClassesInLibrary(emitter, library);
+    processNativeClassesInLibrary(world, emitter, library);
   }
 }
 
 void addSubtypes(ClassElement cls,
                  NativeEmitter emitter) {
   for (Type type in cls.allSupertypes) {
     List<Element> subtypes = emitter.subtypes.putIfAbsent(
         type.element,
         () => <ClassElement>[]);
     subtypes.add(cls);
   }
 
   List<Element> directSubtypes = emitter.directSubtypes.putIfAbsent(
       cls.superclass,
       () => <ClassElement>[]);
   directSubtypes.add(cls);
 }
 
-void processNativeClassesInLibrary(CodeEmitterTask emitter,
+void processNativeClassesInLibrary(Enqueuer world,
+                                   CodeEmitterTask emitter,
                                    LibraryElement library) {
   bool hasNativeClass = false;
   final compiler = emitter.compiler;
   for (Link<Element> link = library.topLevelElements;
        !link.isEmpty(); link = link.tail) {
     Element element = link.head;
     if (element.kind == ElementKind.CLASS) {
       ClassElement classElement = element;
       if (classElement.isNative()) {
         hasNativeClass = true;
-        compiler.registerInstantiatedClass(classElement);
+        world.registerInstantiatedClass(classElement);
         // Also parse the node to know all its methods because
         // otherwise it will only be parsed if there is a call to
         // one of its constructor.
         classElement.parseNode(compiler);
         // Resolve to setup the inheritance.
         classElement.ensureResolved(compiler);
         // Add the information that this class is a subtype of
         // its supertypes. The code emitter and the ssa builder use that
         // information.
         addSubtypes(classElement, emitter.nativeEmitter);
       }
     }
   }
   if (hasNativeClass) {
-    final worlds = [compiler.enqueuer.resolution, compiler.enqueuer.codegen];
-    for (var world in worlds) {
-      world.registerStaticUse(compiler.findHelper(
-          const SourceString('dynamicFunction')));
-      world.registerStaticUse(compiler.findHelper(
-          const SourceString('dynamicSetMetadata')));
-      world.registerStaticUse(compiler.findHelper(
-          const SourceString('defineProperty')));
-      world.registerStaticUse(compiler.findHelper(
-          const SourceString('toStringForNativeObject')));
-    }
+    world.registerStaticUse(compiler.findHelper(
+        const SourceString('dynamicFunction')));
+    world.registerStaticUse(compiler.findHelper(
+        const SourceString('dynamicSetMetadata')));
+    world.registerStaticUse(compiler.findHelper(
+        const SourceString('defineProperty')));
+    world.registerStaticUse(compiler.findHelper(
+        const SourceString('toStringForNativeObject')));
   }
 }
 
 void maybeEnableNative(Compiler compiler,
                        LibraryElement library,
                        Uri uri) {
   String libraryName = uri.toString();
   if (library.script.name.contains('dart/frog/tests/frog_native')
       || libraryName == 'dart:dom_deprecated'
       || libraryName == 'dart:isolate'
@@ skipping 267 matching lines @@
                                       String parameters) {
   buffer.add("  if (Object.getPrototypeOf(this).hasOwnProperty");
   buffer.add("('$methodName')) {\n");
   buffer.add("  $code");
   buffer.add("  } else {\n");
   buffer.add("    return Object.prototype.$methodName.call(this");
   buffer.add(parameters == '' ? '' : ', $parameters');
   buffer.add(");\n");
   buffer.add("  }\n");
 }