dart2js: The name of a library without a library declaration is the empty string.

sdk/lib/_internal/lib/js_mirrors.dart

Index: sdk/lib/_internal/lib/js_mirrors.dart
diff --git a/sdk/lib/_internal/lib/js_mirrors.dart b/sdk/lib/_internal/lib/js_mirrors.dart
index 0fadcede74fa9d7af9dfc175cd64610c54845081..f6f521d524500d01411df71a547ba077ada94bd1 100644
--- a/sdk/lib/_internal/lib/js_mirrors.dart
+++ b/sdk/lib/_internal/lib/js_mirrors.dart
@@ -1937,7 +1937,6 @@ TypeMirror computeTypeMirror(DeclarationMirror owner, var type) {
 Symbol computeQualifiedName(DeclarationMirror owner, Symbol simpleName) {
   if (owner == null) return simpleName;
   String ownerName = n(owner.qualifiedName);
-  if (ownerName == '') return simpleName;
   return s('$ownerName.${n(simpleName)}');
 }