Continue the crazy hacking on the recursive_import_test and give

tests/utils/recursive_import_test.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.
 
 // Test of "recursive" imports using the dart2js compiler API.
 
 import 'dart:async';
 import '../../sdk/lib/_internal/compiler/compiler.dart';
 import 'dart:uri';
 
@@ skipping 13 matching lines @@
 class Type {}
 class Null {}
 class LinkedHashMap {}
 getRuntimeTypeInfo(o) {}
 setRuntimeTypeInfo(o, i) {}
 eqNull(a) {}
 eqNullB(a) {}
 class JSInvocationMirror {}  // Should be in helper.
 """;
 
+const INTERCEPTORS_LIB = """
+library interceptors;
+class JSArray {
+  get length => null;
+  removeLast() => null;
+  add(x) { }
+}
+class JSString {
+  get length => null;
+  split(x) => null;
+  concat(x) => null;
+  toString() => null;
+}
+""";
+
 const String RECURSIVE_MAIN = """
 library fisk;
 import 'recurse/fisk.dart';
 main() {}
 """;
 
 
 main() {
   int count = 0;
   Future<String> provider(Uri uri) {
     Completer<String> completer = new Completer<String>();
     String source;
     if (uri.path.length > 100) {
       // Simulate an OS error.
       throw 'Path length exceeded';
     } else if (uri.scheme == "main") {
       count++;
       source = RECURSIVE_MAIN;
     } else if (uri.scheme == "lib") {
       if (uri.path.endsWith("/core.dart")) {
         source = CORE_LIB;
       } else if (uri.path.endsWith('_patch.dart')) {
         source = '';
       } else if (uri.path.endsWith('isolate_helper.dart')) {
         source = 'class _WorkerStub {}';
+      } else if (uri.path.endsWith('interceptors.dart')) {
+        source = INTERCEPTORS_LIB;
       } else {
         source = "library lib${uri.path.replaceAll('/', '.')};";
       }
     } else {
      throw "unexpected URI $uri";
     }
     completer.complete(source);
     return completer.future;
   }
 
@@ skipping 22 matching lines @@
     Expect.isNull(code);
     Expect.isTrue(10 < count);
     // Two warnings for each time RECURSIVE_MAIN is read, except the
     // first time.
     Expect.equals(2 * (count - 1), warningCount);
     Expect.equals(1, errorCount);
   }, onError: (AsyncError e) {
       throw 'Compilation failed';
   });
 }