Remove js.ArrayElement.

pkg/compiler/lib/src/js_backend/constant_emitter.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 ConstantEmitter {
   ConstantReferenceEmitter _referenceEmitter;
   ConstantLiteralEmitter _literalEmitter;
 
@@ skipping 216 matching lines @@
    * The string is assumed quoted by double quote characters.
    */
   jsAst.Expression visitString(StringConstantValue constant) {
     StringBuffer sb = new StringBuffer();
     writeJsonEscapedCharsOn(constant.primitiveValue.slowToString(), sb);
     return new jsAst.LiteralString('"$sb"');
   }
 
   jsAst.Expression visitList(ListConstantValue constant) {
     List<jsAst.Expression> elements = _array(constant.entries);
-    jsAst.ArrayInitializer array = new jsAst.ArrayInitializer.from(elements);
+    jsAst.ArrayInitializer array = new jsAst.ArrayInitializer(elements);
     jsAst.Expression value = makeConstantListTemplate.instantiate([array]);
     return maybeAddTypeArguments(constant.type, value);
   }
 
   jsAst.Expression getJsConstructor(ClassElement element) {
     return namer.elementAccess(element);
   }
 
   jsAst.Expression visitMap(JavaScriptMapConstant constant) {
     jsAst.Expression jsMap() {
@@ skipping 16 matching lines @@
     jsAst.Expression jsGeneralMap() {
       List<jsAst.Expression> data = <jsAst.Expression>[];
       for (int i = 0; i < constant.keys.length; i++) {
         jsAst.Expression keyExpression =
             constantEmitter.reference(constant.keys[i]);
         jsAst.Expression valueExpression =
             constantEmitter.reference(constant.values[i]);
         data.add(keyExpression);
         data.add(valueExpression);
       }
-      return new jsAst.ArrayInitializer.from(data);
+      return new jsAst.ArrayInitializer(data);
     }
 
     ClassElement classElement = constant.type.element;
     String className = classElement.name;
 
     List<jsAst.Expression> arguments = <jsAst.Expression>[];
 
     // The arguments of the JavaScript constructor for any given Dart class
     // are in the same order as the members of the class element.
     int emittedArgumentCount = 0;
@@ skipping 70 matching lines @@
         getJsConstructor(constant.type.element),
         _array(constant.fields));
     return maybeAddTypeArguments(constant.type, instantiation);
   }
 
   String stripComments(String rawJavaScript) {
     return rawJavaScript.replaceAll(COMMENT_RE, '');
   }
 
   List<jsAst.Expression> _array(List<ConstantValue> values) {
-    List<jsAst.Expression> valueList = <jsAst.Expression>[];
-    for (int i = 0; i < values.length; i++) {
-      valueList.add(constantEmitter.reference(values[i]));
-    }
-    return valueList;
+    return values.map(constantEmitter.reference).toList(growable: false);
   }
 
   jsAst.Expression maybeAddTypeArguments(InterfaceType type,
                                          jsAst.Expression value) {
     if (type is InterfaceType &&
         !type.treatAsRaw &&
         backend.classNeedsRti(type.element)) {
       InterfaceType interface = type;
       RuntimeTypes rti = backend.rti;
       Iterable<String> arguments = interface.typeArguments
           .map((DartType type) =>
               rti.getTypeRepresentationWithHashes(type, (_){}));
       jsAst.Expression argumentList =
           new jsAst.LiteralString('[${arguments.join(', ')}]');
       return new jsAst.Call(getHelperProperty(backend.getSetRuntimeTypeInfo()),
                             [value, argumentList]);
     }
     return value;
   }
 
   jsAst.Expression visitDeferred(DeferredConstantValue constant) {
     return constantEmitter.reference(constant.referenced);
   }
 }