Track names in DeclarationBuilder.

pkg/front_end/lib/src/fasta/kernel/kernel_library_builder.dart

 // Copyright (c) 2016, 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 fasta.kernel_library_builder;
 
 import 'package:kernel/ast.dart';
 
 import 'package:kernel/clone.dart' show
     CloneVisitor;
@@ skipping 117 matching lines @@
   void addField(List<MetadataBuilder> metadata,
       int modifiers, KernelTypeBuilder type, String name, int charOffset) {
     addBuilder(name, new KernelFieldBuilder(
             metadata, type, name, modifiers, this, charOffset), charOffset);
   }
 
   void addProcedure(List<MetadataBuilder> metadata,
       int modifiers, KernelTypeBuilder returnType, String name,
       List<TypeVariableBuilder> typeVariables,
       List<FormalParameterBuilder> formals, AsyncMarker asyncModifier,
-      ProcedureKind kind, int charOffset) {
+      ProcedureKind kind, int charOffset, {bool isTopLevel}) {
     // Nested declaration began in `OutlineBuilder.beginMethod` or
     // `OutlineBuilder.beginTopLevelMethod`.
     endNestedDeclaration().resolveTypes(typeVariables);
     addBuilder(name,
         new KernelProcedureBuilder(metadata, modifiers, returnType, name,
             typeVariables, formals, asyncModifier, kind, this, charOffset),
         charOffset);
   }
 
   void addFactoryMethod(List<MetadataBuilder> metadata,
@@ skipping 132 matching lines @@
           }
           expression.value =
               defaultArgumentFrom(names[expression.name].initializer)
               ..parent = expression;
         }
       }
     }
     return argumentsWithMissingDefaultValues.length;
   }
 }