Big merge from experimental to bleeding edge.

sdk/lib/_internal/compiler/implementation/js_backend/emitter_no_eval.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_backend;
 
 class CodeEmitterNoEvalTask extends CodeEmitterTask {
   CodeEmitterNoEvalTask(Compiler compiler,
                         Namer namer,
                         bool generateSourceMap)
@@ skipping 58 matching lines @@
 
   void emitLazyInitializedGetter(VariableElement element, CodeBuffer buffer) {
     String isolate = namer.CURRENT_ISOLATE;
     buffer.add(', function() { return $isolate.${namer.getName(element)}; }');
   }
 
   js.Expression buildConstructor(String mangledName, List<String> fieldNames) {
     return new js.NamedFunction(
         new js.VariableDeclaration(mangledName),
         new js.Fun(
-            fieldNames.map((fieldName) => new js.Parameter(fieldName)),
+            fieldNames
+                .mappedBy((fieldName) => new js.Parameter(fieldName))
+                .toList(),
             new js.Block(
-                fieldNames.map((fieldName) =>
+                fieldNames.mappedBy((fieldName) =>
                     new js.ExpressionStatement(
                         new js.Assignment(
                             new js.This().dot(fieldName),
-                            new js.VariableUse(fieldName)))))));
+                            new js.VariableUse(fieldName))))
+                    .toList())));
   }
 
   void emitBoundClosureClassHeader(String mangledName,
                                    String superName,
                                    List<String> fieldNames,
                                    ClassBuilder builder) {
     builder.addProperty('', buildConstructor(mangledName, fieldNames));
     builder.addProperty('super', js.string(superName));
   }
 
@@ skipping 27 matching lines @@
   }
 
   void emitClassFields(ClassElement classElement,
                        ClassBuilder builder,
                        { String superClass: "",
                          bool classIsNative: false}) {
   }
 
   bool get getterAndSetterCanBeImplementedByFieldSpec => false;
 }