Merge CommonElements and BackendHelpers!

pkg/compiler/lib/src/js_emitter/class_stub_generator.dart

 // Copyright (c) 2014, 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 dart2js.js_emitter.class_stub_generator;
 
 import '../common/names.dart' show Identifiers;
 import '../compiler.dart' show Compiler;
 import '../elements/entities.dart';
 import '../js/js.dart' as jsAst;
@@ skipping 178 matching lines @@
     jsAst.Expression expression = js(
         '''this.#noSuchMethodName(#receiver,
                     #createInvocationMirror(#methodName,
                                             #internalName,
                                             #type,
                                             #arguments,
                                             #namedArguments))''',
         {
           'receiver': isIntercepted ? r'$receiver' : 'this',
           'noSuchMethodName': namer.noSuchMethodName,
-          'createInvocationMirror': backend.emitter
-              .staticFunctionAccess(backend.helpers.createInvocationMirror),
+          'createInvocationMirror': backend.emitter.staticFunctionAccess(
+              backend.commonElements.createInvocationMirror),
           'methodName':
               js.quoteName(enableMinification ? internalName : methodName),
           'internalName': js.quoteName(internalName),
           'type': js.number(type),
           'arguments':
               new jsAst.ArrayInitializer(parameterNames.map(js).toList()),
           'namedArguments': new jsAst.ArrayInitializer(argNames)
         });
 
     jsAst.Expression function;
@@ skipping 18 matching lines @@
 ///    Each function must have the `$callName` property set.
 ///   * `reflectionInfo`: contains reflective information, and the function
 ///    type. TODO(floitsch): point to where this is specified.
 ///   * `isStatic`.
 ///   * `name`.
 ///   * `isIntercepted.
 List<jsAst.Statement> buildTearOffCode(JavaScriptBackend backend) {
   Namer namer = backend.namer;
   Compiler compiler = backend.compiler;
 
-  FunctionEntity closureFromTearOff = backend.helpers.closureFromTearOff;
+  FunctionEntity closureFromTearOff = backend.commonElements.closureFromTearOff;
   jsAst.Expression tearOffAccessExpression;
   jsAst.Expression tearOffGlobalObjectString;
   jsAst.Expression tearOffGlobalObject;
   if (closureFromTearOff != null) {
     tearOffAccessExpression =
         backend.emitter.staticFunctionAccess(closureFromTearOff);
     tearOffGlobalObject =
         js.stringPart(namer.globalObjectForMethod(closureFromTearOff));
     tearOffGlobalObjectString =
         js.string(namer.globalObjectForMethod(closureFromTearOff));
@@ skipping 63 matching lines @@
               if (cache === void 0) cache = #tearOff(
                   this, funcs, reflectionInfo, true, [], name).prototype;
               return cache;
             }
           : tearOffGetter(funcs, reflectionInfo, name, isIntercepted);
     }''',
       {'tearOff': tearOffAccessExpression});
 
   return <jsAst.Statement>[tearOffGetter, tearOff];
 }