Generate and use cross frame wrappers for types in other frames/windows.

tests/html/inner_frame_test.dart

Index: tests/html/inner_frame_test.dart
diff --git a/tests/html/inner_frame_test.dart b/tests/html/inner_frame_test.dart
index f330de7c47a640ccac3008e35164e184900e6559..2c72a1fb99093e971170f6088028b6b76e15aac4 100644
--- a/tests/html/inner_frame_test.dart
+++ b/tests/html/inner_frame_test.dart
@@ -18,6 +18,7 @@ main() {
       parentDocument.body.nodes.add(div);
       Expect.fail('Should not reach here.');
     } catch (NoSuchMethodException e) {
+      // TODO(vsm): This should be UnsupportedOperationException.

[sra1, 2012/05/10 00:12:06]

Do you think it is worth catching both exceptions?

       // Expected.
     }
 
@@ -29,10 +30,17 @@ main() {
       div.id = "illegalTop";
       parentDocument.body.nodes.add(div);
       Expect.fail('Should not reach here.');
-    } catch (var e) {
+    } catch (NoSuchMethodException e) {
+      // TODO(vsm): This should be UnsupportedOperationException.
       // Expected.
-      // TODO(vsm): Enforce this is a NoSuchMethodException.
     }
+
+    // Install Message Handler.
+    window.on.message.add((e) {
+        if (e.data == 'test1') {
+          window.parent.postMessage('test2', '*');
+        }
+      });
     return;
   }
 
@@ -47,6 +55,18 @@ main() {
       document.body.nodes.add(iframe);
     });
 
+  asyncTest('postMessage', 1, () {
+      window.on.message.add((e) {
+          if (e.data == 'test2') {
+            // Ensure that equality is implemented in cross frame
+            // wrapper.
+            Expect.equals(iframe.contentWindow, e.source);
+            callbackDone();
+          }
+        });
+      iframe.contentWindow.postMessage('test1', '*');
+    });
+
   test('frameElement', () {
       var div = document.query('#illegalFrameElement');