Implement implicit constructors in mixin applications.

sdk/lib/_internal/compiler/implementation/enqueue.dart

Index: sdk/lib/_internal/compiler/implementation/enqueue.dart
diff --git a/sdk/lib/_internal/compiler/implementation/enqueue.dart b/sdk/lib/_internal/compiler/implementation/enqueue.dart
index 70897cb009f3e3372c22d07528ce28ce247d9d35..b29f651b2ba86f4a4fae0887487cda7f3097e6f2 100644
--- a/sdk/lib/_internal/compiler/implementation/enqueue.dart
+++ b/sdk/lib/_internal/compiler/implementation/enqueue.dart
@@ -59,6 +59,11 @@ abstract class Enqueuer {
     assert(invariant(element, element.isDeclaration));
     if (element.isForeign(compiler)) return;
 
+    if (element is ForwardingConstructorElement) {

[ahe, 2013/04/15 13:36:46]

Can you call a method instead?

+      addToWorkList(element.superConstructor, elements);
+      return;
+    }
+
     if (!addElementToWorkList(element, elements)) return;
 
     // Enable runtime type support if we discover a getter called runtimeType.