Register parameter types for closure invocations to the backend.

tests/compiler/dart2js/mock_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('mock_compiler');
 
 #import("dart:uri");
 
 #import("../../../lib/compiler/implementation/elements/elements.dart");
 #import("../../../lib/compiler/implementation/leg.dart");
@@ skipping 72 matching lines @@
         super(enableTypeAssertions: enableTypeAssertions) {
     coreLibrary = createLibrary("core", coreSource);
     // We need to set the assert method to avoid calls with a 'null'
     // target being interpreted as a call to assert.
     jsHelperLibrary = createLibrary("helper", helperSource);
     assertMethod = jsHelperLibrary.find(buildSourceString('assert'));
     interceptorsLibrary = createLibrary("interceptors", interceptorsSource);
 
     mainApp = mockLibrary(this, "");
     initializeSpecialClasses();
+    objectClass.ensureResolved(this);

[ngeoffray, 2012/10/15 12:53:39]

Did you find out why you need to do this? Maybe add a comment.

[floitsch, 2012/10/18 15:59:52]

https://codereview.chromium.org/11184042/

   }
 
   /**
    * Used internally to create a library from a source text. The created library
    * is fixed to export its top-level declarations.
    */
   LibraryElement createLibrary(String name, String source) {
     Uri uri = new Uri.fromComponents(scheme: "source", path: name);
     var script = new Script(uri, new MockFile(source));
     var library = new LibraryElement(script);
@@ skipping 116 matching lines @@
     });
   }
 }
 
 LibraryElement mockLibrary(Compiler compiler, String source) {
   Uri uri = new Uri.fromComponents(scheme: "source");
   var library = new LibraryElement(new Script(uri, new MockFile(source)));
   importLibrary(library, compiler.coreLibrary, compiler);
   return library;
 }