Check closure data for serialization

pkg/compiler/lib/src/world.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.world;
 
 import 'closure.dart' show SynthesizedCallMethodElementX;
 import 'common.dart';
 import 'common/backend_api.dart' show Backend;
 import 'compiler.dart' show Compiler;
@@ skipping 678 matching lines @@
     getClassHierarchyNode(coreClasses.objectClass)
         .printOn(sb, ' ', instantiatedOnly: cls == null, withRespectTo: cls);
     return sb.toString();
   }
 
   void registerMixinUse(
       MixinApplicationElement mixinApplication, ClassElement mixin) {
     // TODO(johnniwinther): Add map restricted to live classes.
     // We don't support patch classes as mixin.
     assert(mixin.isDeclaration);
-    Set<MixinApplicationElement> users = _mixinUses.putIfAbsent(
-        mixin, () => new Set<MixinApplicationElement>());
+    Set<MixinApplicationElement> users =
+        _mixinUses.putIfAbsent(mixin, () => new Set<MixinApplicationElement>());
     users.add(mixinApplication);
   }
 
   bool hasAnyUserDefinedGetter(Selector selector, ti.TypeMask mask) {
     return allFunctions.filter(selector, mask).any((each) => each.isGetter);
   }
 
   void registerUsedElement(Element element) {
     if (element.isInstanceMember && !element.isAbstract) {
       allFunctions.add(element);
@@ skipping 115 matching lines @@
     // function expressions's element.
     // TODO(herhut): Generate classes for function expressions earlier.
     if (element is SynthesizedCallMethodElementX) {
       return getMightBePassedToApply(element.expression);
     }
     return functionsThatMightBePassedToApply.contains(element);
   }
 
   bool get hasClosedWorldAssumption => !compiler.options.hasIncrementalSupport;
 }