Issue 29398. Infer instance members using InheritanceManager of the ClassElement.

pkg/analyzer/lib/src/task/dart.dart

 // Copyright (c) 2015, 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 analyzer.src.task.dart;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
@@ skipping 3472 matching lines @@
             }
           }
         }
       }
     }
 
     //
     // Infer instance members.
     //
     if (context.analysisOptions.strongMode) {
+      var inheritanceManager = new InheritanceManager(
+          resolutionMap.elementDeclaredByCompilationUnit(unit).library);
       InstanceMemberInferrer inferrer = new InstanceMemberInferrer(
-          typeProvider,
-          new InheritanceManager(
-              resolutionMap.elementDeclaredByCompilationUnit(unit).library),
-          fieldsWithDisabledInference,
+          typeProvider, (_) => inheritanceManager, fieldsWithDisabledInference,
           typeSystem: context.typeSystem);
       inferrer.inferCompilationUnit(unit.element);
     }
     //
     // Record outputs.
     //
     outputs[RESOLVED_UNIT10] = unit;
     outputs[CREATED_RESOLVED_UNIT10] = true;
   }
 
@@ skipping 3079 matching lines @@
 
   @override
   bool moveNext() {
     if (_newSources.isEmpty) {
       return false;
     }
     currentTarget = _newSources.removeLast();
     return true;
   }
 }