Implement ClassMirror.owner and LibraryMirror.uri.

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

Index: dart/sdk/lib/_internal/compiler/implementation/enqueue.dart
diff --git a/dart/sdk/lib/_internal/compiler/implementation/enqueue.dart b/dart/sdk/lib/_internal/compiler/implementation/enqueue.dart
index ca6d2d6743a4fcb12b57b7b36b7743cdb01290b1..461018f9e860096419d7daca2bfd1800e8007bf3 100644
--- a/dart/sdk/lib/_internal/compiler/implementation/enqueue.dart
+++ b/dart/sdk/lib/_internal/compiler/implementation/enqueue.dart
@@ -23,7 +23,11 @@ class EnqueueTask extends CompilerTask {
       if (element.isLibrary()) {
         LibraryElementX library = element;
         Uri uri = library.canonicalUri;
-        if (uri.scheme != 'dart' && !uri.path.startsWith('_')) {
+        // Don't include private implementation libraries.  These
+        // libraries contain special classes that cause problems
+        // in other parts of the resolver (in particular Null and Void).
+        // TODO(ahe): Consider lifting this restriction.
+        if (uri.scheme != 'dart' || !uri.path.startsWith('_')) {
           members = library.localMembers;
           // TODO(ahe): Is this right?  Is this necessary?
           name = library.getLibraryOrScriptName();