Compute WorldImpact for mirror analysis.

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 2366 matching lines @@
         registerBackendUse(e);
         enqueuer.addToWorkList(e);
       }
     }
 
     if (!enqueuer.isResolutionQueue && preMirrorsMethodCount == 0) {
       preMirrorsMethodCount = generatedCode.length;
     }
 
     if (isTreeShakingDisabled) {
-      mirrorsAnalysis.enqueueReflectiveElements(
-          enqueuer, recentClasses, compiler.libraryLoader.libraries);
+      enqueuer.applyImpact(
+          compiler.impactStrategy,
+          mirrorsAnalysis.computeImpactForReflectiveElements(recentClasses,
+              enqueuer.processedClasses, compiler.libraryLoader.libraries,
+              forResolution: enqueuer.isResolutionQueue));
     } else if (!targetsUsed.isEmpty && enqueuer.isResolutionQueue) {
       // Add all static elements (not classes) that have been requested for
       // reflection. If there is no mirror-usage these are probably not
       // necessary, but the backend relies on them being resolved.
-      mirrorsAnalysis.enqueueReflectiveStaticFields(
-          enqueuer, _findStaticFieldTargets());
+      enqueuer.applyImpact(
+          compiler.impactStrategy,
+          mirrorsAnalysis.computeImpactForReflectiveStaticFields(
+              _findStaticFieldTargets(),
+              forResolution: enqueuer.isResolutionQueue));
     }
 
     if (mustPreserveNames) reporter.log('Preserving names.');
 
     if (mustRetainMetadata) {
       reporter.log('Retaining metadata.');
 
       compiler.libraryLoader.libraries.forEach(retainMetadataOf);
 
       StagedWorldImpactBuilder impactBuilder = enqueuer.isResolutionQueue
@@ skipping 871 matching lines @@
   ClassElement get mapImplementation => helpers.mapLiteralClass;
   ClassElement get constMapImplementation => helpers.constMapLiteralClass;
   ClassElement get typeImplementation => helpers.typeLiteralClass;
   ClassElement get boolImplementation => helpers.jsBoolClass;
   ClassElement get nullImplementation => helpers.jsNullClass;
   ClassElement get syncStarIterableImplementation => helpers.syncStarIterable;
   ClassElement get asyncFutureImplementation => helpers.futureImplementation;
   ClassElement get asyncStarStreamImplementation => helpers.controllerStream;
   ClassElement get functionImplementation => helpers.coreClasses.functionClass;
 }