Add ImportElement and ExportElement

pkg/compiler/lib/src/compiler.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.
 
 library dart2js.compiler_base;
 
 import 'dart:async' show
     EventSink,
     Future;
 
@@ skipping 1481 matching lines @@
    * [:null:] if [resolvedUri] is loaded as the main library. The
    * [importingLibrary] is used to grant access to internal libraries from
    * platform libraries and patch libraries.
    *
    * If the [resolvedUri] is not accessible from [importingLibrary], this method
    * is responsible for reporting errors.
    *
    * See [LibraryLoader] for terminology on URIs.
    */
   Uri translateResolvedUri(LibraryElement importingLibrary,
-                           Uri resolvedUri, Node node) {
+                           Uri resolvedUri, Spannable spannable) {
     unimplemented(importingLibrary, 'Compiler.translateResolvedUri');
     return null;
   }
 
   /**
    * Reads the script specified by the [readableUri].
    *
    * See [LibraryLoader] for terminology on URIs.
    */
   Future<Script> readScript(Spannable node, Uri readableUri) {
@@ skipping 279 matching lines @@
 
   @override
   InterfaceType streamType([DartType elementType]) {
     InterfaceType type = streamClass.computeType(compiler);
     if (elementType == null) {
       return streamClass.rawType;
     }
     return type.createInstantiation([elementType]);
   }
 }