Introduces the new syntax for deferred loading

sdk/lib/_internal/compiler/implementation/tree/nodes.dart

Index: sdk/lib/_internal/compiler/implementation/tree/nodes.dart
diff --git a/sdk/lib/_internal/compiler/implementation/tree/nodes.dart b/sdk/lib/_internal/compiler/implementation/tree/nodes.dart
index 40ec287f84ceee86e5c1c5851e93e7734ccb49ca..d97e697a4dc886dd52b3f169b578c3fee7e73403 100644
--- a/sdk/lib/_internal/compiler/implementation/tree/nodes.dart
+++ b/sdk/lib/_internal/compiler/implementation/tree/nodes.dart
@@ -1801,10 +1801,12 @@ abstract class LibraryDependency extends LibraryTag {
 class Import extends LibraryDependency {
   final Identifier prefix;
   final Token importKeyword;
+  final bool isDeferred;
 
   Import(this.importKeyword, StringNode uri,
          this.prefix, NodeList combinators,
-         Link<MetadataAnnotation> metadata)
+         Link<MetadataAnnotation> metadata,
+         {this.isDeferred})

[Johnni Winther, 2014/03/18 12:29:14]

You need to update the Unparser and the PrettyPrinter to handle [isDeferred] +
add test in the unparser_test unittest.

[sigurdm, 2014/03/19 12:46:30]

Done.

       : super(uri, combinators, metadata);
 
   bool get isImport => true;