Introduces the new syntax for deferred loading

sdk/lib/_internal/compiler/implementation/ir/ir_builder.dart

 // Copyright (c) 2013, 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.ir_builder;
 
 import 'ir_nodes.dart' as ir;
 import '../elements/elements.dart';
 import '../dart2jslib.dart';
 import '../source_file.dart';
@@ skipping 39 matching lines @@
         if (canBuild(element)) {
           element = element.implementation;
 
           SourceFile sourceFile = elementSourceFile(element);
           IrBuilder builder =
               new IrBuilder(elementsMapping, compiler, sourceFile);
           ir.Function function;
           ElementKind kind = element.kind;
           if (kind == ElementKind.GENERATIVE_CONSTRUCTOR) {
             // TODO(lry): build ir for constructors.
+          } else if (element.isDeferredLoaderGetter()) {
+            // TODO(sigurdm): Build ir for deferred loader functions.
           } else if (kind == ElementKind.GENERATIVE_CONSTRUCTOR_BODY ||
               kind == ElementKind.FUNCTION ||
               kind == ElementKind.GETTER ||
               kind == ElementKind.SETTER) {
             function = builder.buildFunction(element);
           } else if (kind == ElementKind.FIELD) {
             // TODO(lry): build ir for lazy initializers of static fields.
           } else {
             compiler.internalErrorOnElement(element,
                 'unexpected element kind $kind');
@@ skipping 363 matching lines @@
     } catch(e) {
       if (e == ABORT_IRNODE_BUILDER) return null;
       rethrow;
     }
   }
 
   void internalError(String reason, {ast.Node node}) {
     giveup();
   }
 }