Isolates: allow sending of arbitrary objects in dart2js.

sdk/lib/internal/internal.dart

Index: sdk/lib/internal/internal.dart
diff --git a/sdk/lib/internal/internal.dart b/sdk/lib/internal/internal.dart
index 10b961312a021eacd49e1f84b2f652af6eb02821..7b4bf9e741ff9a43be5da44874fba981e4caf8e6 100644
--- a/sdk/lib/internal/internal.dart
+++ b/sdk/lib/internal/internal.dart
@@ -45,3 +45,9 @@ const POWERS_OF_TEN = const [
    1000000000000000000000.0,
   10000000000000000000000.0,
 ];
+
+
+/// Marks the internal map in dart2js, so that internal libraries can is-check
+// them.
+abstract class InternalMap {
+}

[Lasse Reichstein Nielsen, 2014/11/24 12:55:42]

This should be in a dart2js specific import like _isolate_helper, not in
_internal which is also imported by the VM.

(My argument for that is somewhat lessened by the table above only being used by
the VM)

[floitsch, 2014/11/24 15:06:57]

moved to js_helper.