dart2js: use WorldImpact for dump_info

pkg/compiler/lib/src/common/codegen.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.common.codegen;
 
 import '../common.dart';
 import '../compiler.dart' show
     Compiler;
 import '../constants/values.dart' show
@@ skipping 169 matching lines @@
   void registerInstantiatedClass(ClassElement element) {
     registerInstantiation(element.rawType);
   }
 
   void registerStaticUse(StaticUse staticUse) {
     worldImpact.registerStaticUse(staticUse);
   }
 
   void registerDynamicUse(DynamicUse dynamicUse) {
     worldImpact.registerDynamicUse(dynamicUse);
-    compiler.dumpInfoTask.elementUsesSelector(currentElement, dynamicUse);
   }
 
   void registerTypeUse(TypeUse typeUse) {
     worldImpact.registerTypeUse(typeUse);
   }
 
   void registerCompileTimeConstant(ConstantValue constant) {
     worldImpact.registerCompileTimeConstant(constant);
   }
 
@@ skipping 55 matching lines @@
       AstElement element,
       ItemCompilationContext compilationContext)
       : super(element, compilationContext);
 
   TreeElements get resolutionTree => element.resolvedAst.elements;
 
   WorldImpact run(Compiler compiler, CodegenEnqueuer world) {
     if (world.isProcessed(element)) return const WorldImpact();
 
     registry = new CodegenRegistry(compiler, element);
-    return compiler.codegen(this, world);
+    var impact = compiler.codegen(this, world);
+    compiler.dumpInfoTask.registerImpact(element, impact);
+    return impact;
   }
 }