Fix bug from mappedBy -> map conversion.

sdk/lib/_internal/compiler/implementation/js/nodes.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.
 
 part of js;
 
 abstract class NodeVisitor<T> {
   T visitProgram(Program node);
 
   T visitBlock(Block node);
@@ skipping 760 matching lines @@
 }
 
 class ArrayInitializer extends Expression {
   final int length;
   // We represent the array as sparse list of elements. Each element knows its
   // position in the array.
   final List<ArrayElement> elements;
 
   ArrayInitializer(this.length, this.elements);
 
-  factory ArrayInitializer.from(List<Expression> expressions) =>
+  factory ArrayInitializer.from(Iterable<Expression> expressions) =>
       new ArrayInitializer(expressions.length, _convert(expressions));
 
   accept(NodeVisitor visitor) => visitor.visitArrayInitializer(this);
 
   void visitChildren(NodeVisitor visitor) {
     for (ArrayElement element in elements) element.accept(visitor);
   }
 
   int get precedenceLevel => PRIMARY;
 
-  static List<ArrayElement> _convert(List<Expression> expressions) {
+  static List<ArrayElement> _convert(Iterable<Expression> expressions) {
     int index = 0;
     return expressions.map(
         (expression) => new ArrayElement(index++, expression))
         .toList();
   }
 }
 
 /**
  * An expression inside an [ArrayInitialization]. An [ArrayElement] knows
  * its position in the containing [ArrayInitialization].
@@ skipping 94 matching lines @@
 
 Fun fun(List<String> parameterNames, Block body) {
   return new Fun(parameterNames.map((n) => new Parameter(n)).toList(), body);
 }
 
 Assignment assign(Expression leftHandSide, Expression value) {
   return new Assignment(leftHandSide, value);
 }
 
 Expression undefined() => new Prefix('void', new LiteralNumber('0'));