Remove Enqueuer argument from Backend.registerStaticUse

pkg/compiler/lib/src/compiler.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 dart2js.compiler_base;
 
 import 'dart:async' show EventSink, Future;
 
 import '../compiler_new.dart' as api;
 import 'cache_strategy.dart' show CacheStrategy;
@@ skipping 817 matching lines @@
   /**
    * Empty the [world] queue.
    */
   void emptyQueue(Enqueuer world) =>
       selfTask.measureSubtask("Compiler.emptyQueue", () {
         world.forEach((WorkItem work) {
           reporter.withCurrentElement(
               work.element,
               () => selfTask.measureSubtask("world.applyImpact", () {
                     world.applyImpact(
-                        work.element,
                         selfTask.measureSubtask(
-                            "work.run", () => work.run(this, world)));
+                            "work.run", () => work.run(this, world)),
+                        impactSource: work.element);
                   }));
         });
       });
 
   void processQueue(Enqueuer world, Element main) =>
       selfTask.measureSubtask("Compiler.processQueue", () {
         world.nativeEnqueuer.processNativeClasses(libraryLoader.libraries);
         if (main != null && !main.isMalformed) {
           FunctionElement mainMethod = main;
           mainMethod.computeType(resolution);
@@ skipping 1394 matching lines @@
   _ElementScanner(this.scanner);
   void scanLibrary(LibraryElement library) => scanner.scanLibrary(library);
   void scanUnit(CompilationUnitElement unit) => scanner.scan(unit);
 }
 
 class _EmptyEnvironment implements Environment {
   const _EmptyEnvironment();
 
   String valueOf(String key) => null;
 }