Fix analyzer2dart end2end.

pkg/analyzer2dart/lib/src/driver.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 analyzer2dart.driver;
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
@@ skipping 21 matching lines @@
         new DartUriResolver(sdk) /* ,
         new PackageUriResolver(packagesDirectories) */
     ];
     context.sourceFactory = new SourceFactory(uriResolvers);
   }
 
   /**
    * Compute the closed world that is reachable from an entry point.
    */
   ClosedWorld computeWorld(FunctionElement entryPointElement) {
-    TreeShaker treeShaker = new TreeShaker(entryPointElement);
+    InternalAnalysisContext analysisContext = context;
+    TreeShaker treeShaker =
+        new TreeShaker(analysisContext.typeProvider, entryPointElement);
     return treeShaker.shake();
   }
 
   /**
    * Given a source, resolve it and return its entry point.
    */
   FunctionElement resolveEntryPoint(Source source) {
     // Get the library element associated with the source.
     LibraryElement libraryElement = context.computeLibraryElement(source);
 
@@ skipping 13 matching lines @@
     File file = resourceProvider.getResource(path);
     Source source = file.createSource();
     // add the Source
     ChangeSet changeSet = new ChangeSet();
     changeSet.addedSource(source);
     context.applyChanges(changeSet);
     // return the Source
     return source;
   }
 }