Make List.skip, List.take and List.reversed return Iterables, not Lists.

editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart

Index: editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
diff --git a/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart b/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
index 5d49598125ffda53890a1e49afcc6fa1d23c8b46..7b148cb9ac269854429baca19b0367ca07bea51b 100644
--- a/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
+++ b/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
@@ -303,7 +303,7 @@ class ListWrapper<E> extends Collection<E> implements List<E> {
     return elements.removeLast();
   }
 
-  List<E> get reversed => elements.reversed;
+  Iterable<E> get reversed => elements.reversed;
 
   List<E> getRange(int start, int length) {
     return elements.getRange(start, length);