Handle local functions in kernel_impact.

pkg/compiler/lib/src/js_backend/backend.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 js_backend.backend;
 
 import 'dart:async' show Future;
 
 import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames;
 
@@ skipping 2978 matching lines @@
 
   void registerBackendImpact(
       TransformedWorldImpact worldImpact, BackendImpact backendImpact) {
     for (Element staticUse in backendImpact.staticUses) {
       assert(staticUse != null);
       backend.registerBackendUse(staticUse);
       worldImpact.registerStaticUse(
           // TODO(johnniwinther): Store the correct use in impacts.
           new StaticUse.foreignUse(staticUse));
     }
+    for (Selector selector in backendImpact.dynamicUses) {
+      assert(selector != null);
+      worldImpact.registerDynamicUse(new DynamicUse(selector, null));
+    }
     for (InterfaceType instantiatedType in backendImpact.instantiatedTypes) {
       backend.registerBackendUse(instantiatedType.element);
       worldImpact.registerTypeUse(new TypeUse.instantiation(instantiatedType));
     }
     for (ClassElement cls in backendImpact.instantiatedClasses) {
       cls.ensureResolved(backend.resolution);
       backend.registerBackendUse(cls);
       worldImpact.registerTypeUse(new TypeUse.instantiation(cls.rawType));
     }
     for (BackendImpact otherImpact in backendImpact.otherImpacts) {
@@ skipping 207 matching lines @@
 
   @override
   void onImpactUsed(ImpactUseCase impactUse) {
     if (impactUse == DeferredLoadTask.IMPACT_USE && !supportSerialization) {
       // TODO(johnniwinther): Allow emptying when serialization has been
       // performed.
       resolution.emptyCache();
     }
   }
 }